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Macintosh Computers
Vol. II

Service Guide

Modular Computers
March 1993

To Apple On-Site Technicians:

Help up make sure the Apple Service Guides for Macintosh Computers meet your on-site
technical information needs. Send your comments and recommendations to the
AppleLink® address below. We will consider all recommendations for future releases of
the guide and, whenever possible, reply to your recommendations.

AppleLink: STP.DOC

No portion of this document may be produced in any form without the written
permission of Apple Computer, Inc.

©1993 Apple Computer, Inc. Apple, the Apple logo, AppleCAT, AppleLink, AppleShare,
AppleTalk, FDHD, HyperCard, Mac, Macintosh, MultiFinder, ImageWriter, and
StyleWriter are trademarks of Apple Computer, Inc., registered in the U.S. and other
countries. Apple Desktop Bus, AppleFax, AppleLine, Apple SuperDrive, Finder,
Macintosh Duo, Macintosh Quadra, MacTest, PowerBook, PowerBook Duo, Performa,
QuickDraw, System 7, and System 7.0 are trademarks of Apple Computer, Inc. Classic is
a registered trademark licensed to Apple Computer, Inc.

NuBus is a trademark of Texas Instruments.

No portions of this document may be reproduced in any form without the written
permission of Apple Computer, Inc.

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Table of Contents

PEVPOCI COM cs acre csasat a tsaneetts tier eptidecn tantoea tenes dats hed al tnas hid sesiradlieaten 95H stieah dasanices eecatoedeavicatiy as 1
AIM aT OI cacao a man ache ctenleeat octet tee ace tned aatle aur ans lacie apaea ane eames atena git ]
Str CGC soo reeteiese dnesn oc donee Lcve coke shltseab cee el bapa ioapaeprencet toca eicdeacenuem ens 1

SEY WA TI cst vt tench ata caaceaun cece eon baa cA UE atc ag anette 2

ESD) SAlCUy mca teatencudtundshinsiacronet ea ttidnats eeloueneesattbnarcotal tes mnaane teria assem danni 3
FED) PIC VIO M: RUSS hecho tia Sesegact sie nsoaiacid ects cbertus Rub oaatud can eesvaiaeaeN cua eniMneneaae 3
Setting Up-an ESD:sale: WOrkStatlOnescnastaswnideiuinenshantinediuniainnomtsramnaecow ides 4

General Information

SLMIMEG Orne tila thit 2G aU tea seccastrlasateedssygetaoaloalanerini a tiavcuw deen datoeencansnctyntidnadule eer yatuat ada 6
MACINLOSHSAD IS INPUL DEVICES. xsssenisiesotavnateucoteassennrmatbeatniendlaleni tat Naunsthbabina hie eandcealanseitiys 8
MOCiUlS Sy tO i COMES ssspaveh teteacitercashasituacegutetnia anaes iaayldi tt tON eceig Oil aeaaenianne eats 10
DC Clal HL OOIS INCEK usu haiuadua aint sian dita conniateNveeedt na pita ot ise a anak aaa Uren AAar NR 13

On-Site Troubleshooting

FaTTiIE) Bg BivOU] 0] exc) 0101081 6x Sc meenen mnie memene ener tiation rt ere enentre emt feertr tere teetr an caer a irre ener frectnnmr 16
(IVE AL AOAC ss sauiiscitoasasatss imei amas guest enmgetbcee selec calese ensue ands ein teraaeat eae 16
Telephone and On-site-Quick CHECKS is stiresienseraidaesernierandumiioinmaniamnmiinranennanee 16
APOE VATION GAG LITO fa sentesascccsdectennes tbat dade otuginede nieedeauiuetbatess maten saetamaiannenaeenie anus 16

DOM WATE I OUDIES MOO UII Sry, aeedesorsiaceniee ceiounytassatatenenges teste cua ueedis neecnnnen esata tae eeralanees 17
SYSTEMIC FAS FI CNECKIISK ies es auaccesessailncan chav vanuasQebuacul duction She fea siit tan tae ala etaeaa ee iMate 17
DESK p Pre CeCures: ANd PIACH CCS acu asocus satel cette ane tecba cena ig esac ectanatanten neceamecunnes 18

SV SUC ANS chigcte tt 8 syercasea hie Wf et ta creat Aa ahahaha al cca cule cccalel raaaa eae ate ae 21
LET GTO IN esa whet acecstasu gate a scion tan eae arcwn cons nese aetna aeteee 21

DVS Fem: PAIIURC’ CG OCCS 5c vst aicareasmyaitnsaasnau ocnaicecadiacmacan ae eleneatinlnd haha Shas ato etait sctatictetass liseiGe 22
SUTe lM) Blea Shue) ag 80.6 (ex mmmereree on rrer miner ac errearnreeremartr recnrerms errr ere res re tiie tere tr 22
DV Ste MUTTON COU CSsccaatecsicedshesta adeeb cacti t alate eas ore A is tk ad ot air dle Maes tiie nl 25
NGGANiVe V Ale HITOR OCG - te celanaucees Acxacesccteumenty ecuierata suede aussie aeeestunameidatex Nese yalacttaeene 25

FIAT Ware LOUD IES MOO EIS ocassasete. lent acdatactine ya tacea alba iaiasansesel Marini acamlidaec ante maoiale a
Isolating aHard ware PIO Diem xtserstseacss ataeecaeeeaeclanatet aialao tad seotohceatatcate Maahstalestachetiass 27
Hardware Troubleshooting Guidelines .......cccccccessessesescssessescstesestsseetssesssessessssreeeseesseenen 28

SUAECU PE PFODIEMIS SF OW GAIUS escostsrsiss tinted saitstasabe ine otluauctctanbentestedid lates uth eesosslutenhendecnis ssbeiih 29

Replacing/Installine Systetin SOmwat C.giscis sur acccanracscensna sense sctca aes naaecoastrecuoalieuatanttes: 36
Installing System Software Versions 6.0.2 tO 6.0.4 ..cccccssssesesessessesseseeseesssseseaeateseaeeee 36
Installing System Software Versions 6.0.5 tO 6.08 ..cccccsesssesesssssessesessecsesseseasasareseeeees 36
Installing System Software: Vetsion 7 OF Late .sexcdescascensversncecivovsaannnssanracivavaiun neve owewblenernvnaye 37

WAC TCS caisssuoteresantinaticcaenteutaa sepa stamaroasine tu actos etestiesslganeihontabpneds eds dus vortocecaisb ste scbatilecamusastivan acpaeteedtevodstaceids 39
STU SAO IRM ICING ercaa settee isha tarned cect ress Paaesre ave hen aut aaa necnnmemmtaddromneen 39
BR UU AUC Te Scar aeccesat ct aceattreansce eteahal dass taclice at ac nen chant nen oinnndamoaetannyoomiensint 4()
| G70) U6 10) 0) 07-(6) 1411 6 Gane a nen are ay SEER ter err IMP Recaro nee one en eee Te 42
Deter Mime IT a7) UiMPer lS NECUC A sii sascha end casei vcishnemmnonnemoa tance aennmontiers 42

Wiis CANNONS: | UIT Fescszeloactscaidat’ iasdeveeitinnietystalendens Mbowspseb ui cebaiatlaedasssll ennai Abessilde bere taalilte: 42

Ports, Cables, Pin-Outs

COMPU POL LOCA OMS sisi tcaya latieaeatyit nk ceeeuianiateettitilematna iran eamerana amount 44
POLIT Pl CASS esate! dacacelssecuds sate esesebleesncaetndy destin lasedal ttama lots epicia stienunesaccbronnemimantiaa tau 46
CADIS COMME CUOIS eh cu dsscsaeitetnstt cece it cde iactinhetshet tated oedeen chem toa hea ataead einen nates: 48
PUA IES cessed chee edaamn saan sas etapa esa tog os sean ne Seana 49
Exe ritall-V1eo COMME CUON srs ccoueniteSa iti enievwasonaaneiba ati G enuanceatannen pial scetedetiaiendieeaest 49
SCSE COME COR B22) va iietecon uacotianinavanatinccaa aarti eadiannnmen a Mula nonmaNGNmtanen ees 50
Apple Desktop Bus COMME CIOL asscasrsietsare sacinmarnm ann mniecuatt ti memainuaeld eidnanastiins 51
External Floppy: Dive GonnectOr = DB 10) vice aciursacssassnatayenustinssausahacassnintinqurtneeessetsnovaee py!
FAR RCt-C OM MC CLOR 53 ox te ccussavencan becca laacenedaiaetetatiscsaeui sa emmnadledaaseh Myenarnsnbelonesnenueinesitel 53
AlidtO-OUIPUL CONNECTOR = SICICO seuss tase saaesesiupaseneteteseuaalistiaouioe incensmm ete btaneamearreyene 54
Mictophone Input COMM ChE is sccssiey ieasleeh apostate sah etn dies vane ltaaespaceenceserenanetnes Madera: 54
1Bvaloa (ol 6)0 | Ofelolalscl16] Geemmrene tern cement a eeetree enti tcrrn mmre oem ry niet frente Seen tes 54

Macintosh LC, LC Il, and Performa 400

TUNIS FARE PAGES: LIS sxssts beset sata' cacedlunusssttesnasissassaoneeeumestone uaccecendemyhua cee acliatay tan ntanmanntataen 56
SCC INC ALI OMS)». crass cht cheeh exes eoy amaancensstcetd se ecssid tae dnnsensenam dary gaa ssctattanbcemoalenceteenc aanaen nen 58
SVIMOLORN/ CUle CHAT da isusnsrscpunenssntevsasaatienas sd gaascnslun hamsoveruanaeinin tian aaa enema aTTRa et 59
BMW ie LS ct gece de atu aoe teh teh cen oe eats aren aotensce ee 63
Maecmtoshi iC: RAM U botade: «ct. 5, cccsailiusaenneeiduene nagar sacnareu Maus nminieinimauimmens 63
Macintosh LC II and Performa 400 RAM Upgrade.....c.cscccsssseceseeeseeeeenenseeeeseasenen 64

Macintosh Il, IIx, and Ilfx

MNCS tie abe CE Peat TS teeta cite act Sa Secateurs escheat lacunae teehee nnlacanrneanseadilecte need 66
Se CHICANO S== AC ITAL OS NN pps steed asadentesens sea atelier at ngtananan taal Seeb auton asal a suiaonati nimeehion 69
SPCCIMCALIOMS MAC UNL OS IE LIK siti cece lees sustcenuentsiecinuers ied acetone elena standesananiiey hy oenisamaiate 70
SPECI CATIO MS =a CHNCOS ID LL sss vareareutsboansvarote tt erseasldselsetatetd eat aseh cau einand as otiaiaanah ance anbinrern 71
SVM CON CEO GIGI cet durarcucaiecanssacantonaedonas Weare tonn dusty ptacantie Renee aac onion Ratna 12
Macintosh ll aiid Wx MemOne POrades raciacistusrctenti el nana sjonieumistanmananninenaancs ean 76
Macias HIB Memory DS FACLS: deviusliascnvini senate ele tesa bniapsenthainielsvaantdetes ceca eiuabeaiunan cai, 7)
Mai tOS A MAU OI ACES ita reseetirrcuces sonore tandesh aniuleaty satanienteaasaatrageeacoati naleeeaetcoun dane abacibnamieb aes 78
Apple Super DVe UW Pore acacncaterencneai cemmindaimian ntumnmen ate 78
PMMA OFAC 6 i cascacrrenrattcescansicorstis tment guage iaantentmnn ahammar eniagaantnemmae 79
SG, PeriaiiatiO n= Ma Clint la UN since, ctucrind ans cirntsn tase hitiowtiesasnp tins ei ed teenies Senhasnsainnmiuataeaen 80)
ADple Col: Cable Verrier Uys 25 sae casi atin ale eos A ante tices es 80
Internal SGSE Termination BlOCK sc garideaVanicaldevendtaitionnnestattiinivagt tals latistiennenaicbcrniasaanewets 80
Mb Pinal S GST Fie isc acnleanion derawe capi actin ae lytunaoenstiecteedel tng Oe mee trnina rn estim need 81
SIMM Replacement MacintOshy MIX: 25 :.ccinaitetsntacnps shine ranaconn ata iaamusamemamanmnenataae ated 82

ii Table of Contents

Macintosh llcx, lici, and Ilsi

TEAS Cate PARES EIST secs ssatsesesmia ch teria uot use tony ocr en 2d Sec dasa lo andes aleeateaat nea coase du atteaen
SPE CHTCATIOIS=—MACIM LOSI TICK suits sdavss apt Saswraulasedo ta sae cant cusesondvinsa sph inada sat cnssssleawnubeconctinasen canedvadessies
SPC CINCALIONS == MACIILOS IL IICT: seas sstepsels toon gecaiea sha cholate ea So vee denatnas asad coatearateialttades
SPECINCALIONS=—=—MacintOSla TSH ssccuttrel cass tosst esa sesharuaotageicecsneskash sets etuentedeaaniptonanatinawiuaeaman
SHUN OLOIUC TA GLUT es O) 0: Va carerietten meme ern crrenm onee pentnene rrr rch cement ents tre Reteer esr mercer ery rere
Memory WS races NACI OS 1 Cicer cases cestssscduntapienlesdadcltyvup sa cadecabsedetudarinisuctsime nia uttudiynedacein,
Me mony: 0 Doras = MACOS TEC stats ncaa testsnininaaieiadatiiucrvanatanilabatuuisesla pb dieeansdngiunal
Memory Up eta es MacintOsin UI Sitsssesiahiensualctanstence delueter epubappetnentenoidarrneadanlyihetnics winninmpbdasnnns

Macintosh Ilvx, Ilvi, and Performa 600

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DWC CIICALIONS siccroisaastic cecwsa aimee tanta acaba armiaiceis eat ese at ten a amoramaaione me lemma 1
SHEE MN CU GAN sess ts orate ce seed sconces carn lei eaanen peea a eed tacaatoramachanione sams aehenivans nel 1
IMETAO I ys ORACASS cae seesscereesaticuostcaznessa:inns tones stmt yonceeia setnendeiy as sbansoisanadteudsl eae sananenmencnnmaaanals 1

Macintosh Quadra Computers—Macintosh Quadra 700

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SPC CITC AIO ING wiasa' eae ayia caters she taae acacia teen coh caasttianldtalced acca Whid acento et eaeamnedan Maen 1
SVMPCOM/ GULe CHA sacissevesncalaarerndisanacn atin rune wena aaa aane cea 1
MOMmO by: WO Tales carton ee tinctte scale diver iesateesaeeaiinipnt sade Gaara ane tanne hate neaaGeoneadeanataes 1
1B) 57 ts UO) 6) 621 0 (clearer errr arenes eereren treimrey en terete aren nnn nT ere np UamraT een ttn ten pir titer errr ar tat’ 1
WRAM UD SrA CS sch tesatet etna Gua aaetencnraattuaysatean maaan needa iunleddtagtena palette eatin 1

Macintosh Quadra Computers—Macintosh Quadra 900/950

WMT SOrAP CC PAGS LAS 0a scyct a aye ornate oa atten crccanh cease eels Sacre cep atl maumasemaan tne vauiiern 1
ST IL CAI COIS 2 tarps ayers ulcers tees sn cu nda aa dastak teen nN Sen et cab eaten dacsumnanedaretban adie 1
SVN OTN UES CARE secant edged en nde Deetceoeicaes tna aa cages neces selanca awd aes coir aemenmeaeaves 1
PRAM IB OU G ass ctevin asd ava eeu aoasiersediaaatvadetattons antaaaecostcas ga satan etn ea aeaenroemenpne ma 1
VERA OTA cress ache cence anata cla ca al das aguas eis ay nucnwncsugra au taaisnentiealurbaie 1
Inistalline a SCSI SiOrase SVi Ce sa teieicecns sta yess ovaatecdeanad innandauvneseradiaiconnsi dala ee ladcvetnetaynccadalt 1
EO OIC Oats AOA acest ai saci nattlarsenstpatatdessttacsratetcedt seid eSieate Rede dnsontnatencdoasubineautintes 1

Macintosh Computers, Vol. 2

Introduction

Important

This March 1993 update to volumes 1 and 2 of the Apple Service Guide for
Macintosh Computers replaces the previous version of the guides. For this
update we made the following additions and revisions:

e Volume 1 covers all compact and portable Macintosh® computers—that
is, all Macintosh computers that do not require an external monitor.

¢ Volume 2 covers all modular Macintosh computers.

¢ — The guides are slightly larger (8.5 inches by 5.5 inches) than the previous
versions.

e This release contains documentation on 13 additional computers.

Organization
Volume 1 of the Apple Service Guide for Macintosh Computers contains
service and repair information for the following computers:

e Macintosh 128K, 512K, 512K enhanced, and Plus

e Macintosh SE and SE/30

e Macintosh Classic®, Classic II, and Performa” 200

¢ Macintosh Portable

e Macintosh PowerBook™ 100, 140, 145, 160, 170, and 180

¢ Macintosh PowerBook Duo™ 210, Duo 230, Duo Dock, and Duo
MiniDock

Volume 2 of the Apple Service Guide for Macintosh Computers contains
service and repair information for the following computers:

e Macintosh LC, LC II, and Performa 400
¢ Macintosh II, IIx, and IIfx

e Macintosh Ilcx, IIci, and IIsi

e Macintosh IIvx, IIvi, and Performa 600
e Macintosh Quadra™ 700, 900, and 950

Each volume also contains a SIMM chart for the products covered by that
volume and information on ADB devices, module symptom codes, diagnostics,
ports, cables, and pinouts.

Using the Guide

When ordering a replacement module or spare part, be sure to check the part
number given in the guide against the current price pages in Service Source.
Remember that the Apple Service Guide is not updated on a regular basis.

Macintosh Computers, Vol. 2 1

Safety Warnings

A Warning

Make sure that you are not grounded when you work on plugged-in
equipment.

Electrostatic discharge (ESD) can cause severe damage to sensitive
microcircuits. Macintosh circuit boards contain CMOS components,
among the most sensitive chips in use today. CMOS chips, ROMs, and
SIMMs are very susceptible to ESD and skin acid damage. To prevent

A "dead" lithium battery is considered hazardous waste and has some
potential for explosion if improperly handled. Mark the battery
DEAD, place it in a zip-locked wrapper and the packaging used to
ship the replacement battery. Return the dead battery to Apple,
where it will be disposed of following EPA guidelines. Exception: If
the battery is physically damaged, do not return it to Apple; dispose
of the battery locally according to local ordinances.

Introduction and Safety

ESD Safety

Electrostatic discharge (ESD) can irreparably damage the sensitive CMOS chips
and printed circuitry of modern electronic components. Plastic utensils,
polystyrene products, polyester clothing, even the ungrounded touch of your
hand carry sufficient electrostatic charges to damage electronic components.
Follow the ESD prevention rules and set up an ESD-safe workstation as
directed below.

ESD Prevention Rules
1.

A Warning

Before working on a device containing a printed circuit, ground yourself
and your equipment. Use a grounded conductive workbench mat and a
grounding wriststrap, and ground your equipment to the mat.

Make sure that you are not grounded when you work on plugged-in
equipment.

Do not touch anybody who is working on integrated circuits. You could
“zap” the equipment through the technician—even if the technician is
grounded.

Use static-shielding bags for boards and chips during storage,
transportation, and handling. Leave all Apple service exchange
components in their ESD-safe packaging until you need them.

Handle all ICs by the body, not the leads. Also, do not touch the edge
connectors or exposed circuitry on boards or cards.

Do not wear polyester clothing or bring plastic, vinyl, or polystyrene into
the work environment. The electrostatic field around these
nonconductors cannot be removed.

Never place components on any metal surface. Use antistatic,
conductive, or foam rubber mats.

If possible, keep the humidity in the service area between 70% and 90%,
and use an ion generator. Charge levels are reduced (but not eliminated)
in high-humidity environments and in areas with ion generators.

If an ESD pad/Avorkstation is not available, touch bare metal on the power
supply to discharge electrostatic charges.

Macintosh Computers, Vol. 2 3

Setting Up an ESD-Safe Workstation
Materials Required

Conductive workbench mat with ground cord

Wriststrap with built-in 1-megohm resistor and ground cord
Equipment ground cord with alligator clips

Ground/polarity tester

Remove all ESD hazards from the area. Nonconductive materials (for
example, polyester, plastic, vinyl, and polystyrene) cannot be grounded
and retain charges for hours and even days.

Use a ground/polarity tester to verify proper grounding of the power
outlet. If the outlet is wired incorrectly, most testers show a light pattern
that matches a code given on the tester. If the tester does not verify
proper grounding, move to another outlet that is safe.

Connect the grounding cord of the workbench mat to ground.

Use a wriststrap grounding cord. Fasten it to the workbench mat and to
the wriststrap. The wriststrap should touch your skin.

Finally, ground the equipment you are working on. Use alligator clips
and a grounding cord to attach any metal part of the equipment to the
grounded workbench mat.

Introduction and Safety

i
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fy,

General information

SIMM Compatibility Chart 6
Macintosh ADB Input Devices 8
Module Symptom Codes 10
Special Tools Index 13

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Macintosh Computers

DRAM SIMMs for
Service Exchange
Modules

Performa 400
Performa 600
Quadra 700
Quadra 900
Quadra 950

661-0402 256K, PLCC, 120 ns ,

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661-0402 256K, DIP, 120 ns

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661-0402 256K, SOJ, 120 ns
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661-0402 256K, SOJ, 120 ns

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661-0402 256K, SOJ, 120 ‘e

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661-0494 256K, DIP, 120 ns

SARA:

661-0519 256K, SOW, 80 ns

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661-0646 512K,SOJ,80ns_ .°
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Slowest acceptable DRAM speed (ns)

6 General Information

Macintosh Computers

DRAM SIMMs for
Service Exchange
Modules

Quadra 900
Quadra 950

LC Il
Performa 400

661-0403 1 MB, SOJ, 120 ns

oLILILICILILI DLJ) } |.

661-0410 1 MB, DIP, 120 ns

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661-0520 1 MB, SOJ, 80 ns

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661-0546 1 MB, SOJ, 80 ns, Parity

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661-0548 1 MB, SOu, 80 ns, 64-Pin

661-0719 1 MB, SOuJ, 80 ns

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661-0643 2 MB, SOJ, 80ns , 5

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100 | 120

Slowest acceptable DRAM speed (n8}100 100100] 120| 120 80

The SIMM is compatible with the CPU, but the CPU does not use the parity feature of this SIMM.

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Macintosh Computers, Vol. 2 7

Macintosh ADB Input Devices

This list includes all ADB input devices and their part numbers for all Macintosh
computers except the Macintosh 128K, 512K, 512Ke, Plus, and Portable.

Apple Ke VO Oa iO sisnscaaitaseeveagndaveitcuenituehashacaaseaen taeda usGiemaaheneeuacaabene 661-0383
Apple: Keyboard Mic cscsiinics wince cacsneeey ametarace tineaad eee cena 661-0603
Apple Keyboard, French Canadian ................:cccccccececeeeeeeseeeeeeeeeees C661-0383
Apple Keyboard, Spanish ............cccccccsssssssececceeesseseceeseeseeseceeesaeasers E661-0383
Apple Keyboard and Apple Keyboard II parts
BOOM CASE A Kcaseesevicsncansunedatiaics Catan aeniacnne wee nceencuvente: 815-1017
Bottom case, AK II, Version A..........cccccccccsecsessesuesseeeeeseesueeeeeuns 815-6044
Bottom case, AK Il, version Buu... ee cee eee eeceeeeeeeceeeeseeeneees 815-6045
Cable, ADB keyboard, 1 Meter ...............cccccccecssseseeeseeereesseeeeees 590-0361
Cable, ADB keyboard, 1 meter ..............c..ccccccccceeesessececereeeeeeees 590-0616
KEV Cap Sel. AK ayer anrancssy siducaiaaiastaendaneraeueieais eaecgneiouse mates 658-7011
Keyboard encoder PCB, AK Il, version A.............:ccccccseeeeeeereees 981-0020
Keyboard encoder PCB, AK Il, version B ..............ccccceeeeeeeeeeees 981-0021
Keyboard Cable, 2 Metelr...............cccccccssseeeesesssecseenseeeseseesenauees 590-0152
Keystem, w/spring, AK II, version B (set of 10) .................00. 076-0422
Keyswitch, locking, tan/ivory, AK, AEK, AEK Il..................... 970-1263
Keyswitch set, ADB kybd, AK and AEK, tan (set of 10)........... 076-0209
Keyswitch set, ADB kybd, AEK Il, ivory (set of 10).................. 076-0387
Rubber dome, AK Il, version A (Set Of 10) ...............ccccceeeeeeenees 076-0423
WROD CAS Cirrctasthstontenedeiatuaaaiilan aaiiin Sad makaeeiacred metas a ions 810-6042
TOD Case. AK lls VETSION AN asgiicticba acre vesh cehades doce Sioa: 810-6042
Top case, AK Il, Version B o...... cece ccccccceesueceseeeeesseeeseueeueaeeees 810-6043
Apple Extended Keyboard ..............cccccceecccecseseceessesesseeueeeseuesesunenees 661-0384
Apple Extended Keyboard, French Canadian.................::cccscseeeee C661 -0384
Apple Extended Keyboard, German .............cccccccssseeceeetecaaeeeseeenes D661 -0384
Apple Extended Keyboard, Italian ................cccccceseeeeceeceeeueeeeeesennees T661-0384
Apple Extended Keyboard, Spanish................cccccccssseceeeeseeeseeneesens E661-0384
Apple Extended Keyboard parts
BOUOWT COS Cit asada cee scoaaseiaiagataites on ana dcansa sus tumeectawec ties cayicioiaewees 815-1019
Cable, ADB keyboard, 1 Meter ...............ccccccccceeeeeesseeeeeeeseeeeess 590-0361
Keycap set, AEK and AEK Il...............cccccccesessseeeeeteseeeeeceuenneees 658-7010
Keyswitch, locking, tan/ivory, AK, AEK, AEK Il...................008 970-1263
Keyswitch set, ADB kybd, AK and AEK, tan (set of 10)........... 076-0209
Keyswitch set, ADB kybd, AEK II, ivory (set of 10).................. 076-0387
HO PSGa SO ac sarsteauanrecnuna sa vein vapinicaedey fedata eeundnamshcenancwenint 815-1018
Apple Extended Keyboard WN... ccccccccssseeeccseeeseesseseeeneeseseeeeess 661-0543
Apple Extended Keyboard Il, ISO, French.................ccccceseeeeeeeeees EF661-0544
Apple Extended Keyboard II, ISO, French Canadian ................. EC661-0544
Apple Extended Keyboard Il, ISO, German................ccccccseseeeeees ED661-0544
Apple Extended Keyboard Il, ISO, Italian...........0 0c ceeeeeeeeeees ET661-0544

8 General Information

Apple Extended Keyboard II, ISO, Spanish ................:::ceceeeees EE661-0544
Apple Extended Keyboard II parts

BOOM Case: ALK Wilcsiiht shila tet acemean tees cicaty taunt bseuasetnestbineeed 658-5211
Cable, ADB keyboard, 1 MeteP...............cceeecssecceeeeeeeeaeeeeeeeeees 590-0361
FOOL front, AK Ue sah caccasnki vcvaasieaxcedais sienna tiara stunavvevasenaomnnes 865-0057
Foot, rear, adjustable, AEK Il.................cccccccseeceeeeeeeeeeeeeeeeseeeees 865-1139
FOOL Dad: Teal: AK UW nss.ceccave uinttensecencaa cds sepicwaeemnmitineseeunartyas 865-0067
Keycap set, AEK and AEK Il................ccccceceeceeeesseeeeeeeeeeeeseneeees 658-7010
KeEVCap TESel. Ae wcccocccesennccaseasete aan eacecueeeeeetouwerees 658-9001
Keyboard assembly, w/keycaps, version A, AK Il..............:5 949-0357
Keyboard assembly, w/keycaps, version B, AK Il.................... 949-0358
Keyswitch, locking, AEK II ......... cc cceccenseeeeeeeeeeteeesseeeeneneeneaes 937-0051
Keyswitch, locking, tan/ivory, AK, AEK, AEK Il......................5 970-1263
Keyswitch set, AEK Il, white (Set Of 10) ........... ce eeeeseeeeeeeeeee 922-0005
Rack, adjustable foot, AEK Il ...............cccecccesseseeeeeeeeeesseeeeeeseees 815-1138
Spring, foot return, AEK II ............cccceccseeseeeeceeseeeeeeeeaaeseeesensaeeees 870-0030
A= 10) 8162 Coe 2. ao | [ennenen nee nine RENT saunter unr aren ne onnTNT eRe ee ea 001-0017
Toprease, AB KM, sec sssaetetundeissatiesnddntcsumpnnecndsenemnadtaiosueiaasadtet 658-5210
Mouse, ADB (replaced by 661-0479) ............ccccececseeeseeeeeeseeseeeeeseeees 661-0338
Mouse ball (25.4 mm dia), gray, rubber-coated.................:.008 699-8001
Mouse ball (21.9 mm dia), DIACK.............ccccccsececseeeesseeeeesenseees 699-8038
Retainer, ADB mouse (for 25.4 mm gray mouse ball)............. 076-0231
Retainer, ADB mouse (for 21.9 mm black mouse ball)............ 815-0816
MOUSE ADB irish cies) docs annie nea sacwetcu amano cinleamantasin tact antueetAataweles cant, 661-0479

Retainer, screw-on, ADB mouse (for 25.4 mm gray mouse ball) ..815-1136

Macintosh Computers, Vol. 2 9

Module Symptom Codes

When returning a defective module to Apple, always enter on the SRO form
the symptom code that best describes the problem. Do this as follows:

1. Locate and note the three-digit symptom code from the Module
Symptom Codes chart.

2. Select the appropriate modifier code from the list below. This is the
fourth digit of the symptom code.

Code Modifier

Continuous

Intermittent

Environmental/cannot duplicate symptom
Always fails after awhile

Depends on configuration

Fails only with application software

Noisy

Inoperable upon first use

ONOoaRWN —

3. Write the four-digit code on the SRO form.

For example: A Macintosh logic board crashes after being on for an hour or
more. The symptom code is 153, “System bombs or crashes.” The board fails
after it has been in use for awhile, so the modifier code is 4. Place the modifier
code after the symptom code, and enter the error code 1534 on the SRO form.

Module Symptom Codes

Startup/Run Problems

Bad or no startup tone

Screen bright; no Mac face

Sad Mac/self-test fail/startup error

System bombs or crashes

No power light indicator with good power supply

Restarts or shuts down randomly

Can't shut down

Video/Sound Problems

Bad or no color on display

Distorted or no video; system boots OK

Distorted or no sound; system boots OK

General Information

1/O Device Problems

170 Bad or no response (keyboard, mouse, trackball...)

Good game paddle/joystick fails

Serial port failures

Printing or AppleTalk problem

Communications or modem port problems

Bad expansion slots (Apple II, Direct, NuBus...)

Drive 1/O Errors

Can't boot/read internal floppy drive

Can't boot/read external floppy drive

Can't write/format internal floppy drive

Can't write/format external floppy drive

Can't boot/read internal SCSI drive

Can't boot/read external SCSI drive

Can't write/format internal SCSI drive

Can't write/format external SCSI drive

Miscellaneous Problems

Control Panel settings don't work

Connector or jack problems

SIMM socket problems

Board is cracked, damaged
Bad battery
CRT and Analog Boards

Black screen

Vertical bright line

Horizontal bright line

Rolls vertically

Diagonal stripes

Dim or low intensity

Fuzzy screen, unclear characters

257 Unstable picture; logic board OK

258 Incorrect picture size or alignment

Lighted screen, no picture

Fan not spinning

Color not adjustable; no color

Distorted sound

No power, no raster

Macintosh Computers, Vol. 2 11

Code Drive Problems

350 Won't eject
351

Won't format

352 Drive doesn't spin
353 Too many bad blocks
354 Won't mount
| 855 Won't recognize disk formatted on other drive
356 Won't read/write data; disk spins

357 Won't write data

358 Excessive read/write errors
359 i Won't boot; reads/writes OK
360 Excessive seeking
361 Icon doesn't appear on desktop; formats OK
362 Won't format; able to see drive in SC setup
363 Won't format; unable to see drive in SC setup
364 Unable to access drive; system folder present
365 Noisy; works OK
Code Power Supply Problems
450 Clicking noise
451 Fuses keep blowing
452 Causes system failure
453 Noisy; works OK
454 No power
455 System randomly resets
Code Keyboard, Mouse, Input Device Problems
550 No or bad response
551 Bad keyswitch or button
552 Foreign substance spilled on unit
553 Sticky or bouncing keys
554 No cursor response

Printer Problems

Improper print head movement

Paper won't feed
652 Self-test OK; won't print from host
Fails self-test

Won't select from front panel

Printer not seen in Chooser

Prints blank pages

657 Prints black pages

Print is distorted or uneven

Indicator light suggests fault

No power light

General Information

Special Tools Index

Torx Driver
#076-8053 SCSI Loopback Test Card
#077-8219

To mouse

DE-9 Serial Port Plug
(set of 2) #077-8129

CRT Discharge Tool
#076-0381

SIMM Removal Tool
#076-8354

Pull-Apart Tool
#076-8059

IWM/SWIM Extraction Tool
#076-0341

Macintosh Computers, Vol. 2 13

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~ Initial Troubleshooting SSS

. Overall Approach
~ Quick Checks

Software

‘Troubleshooting

| Hardware .

Troubleshooting.

Telephone and On-Site Quick Checks |
¥ Check the power source and power connection.
-_ -¥ Check all cables and cable connections.
- ¥ Check the-adjustment of all user controls. —

“ Check that not more than one-system file is on the startup device dish

vy Check that the computer system and the system software are
compatible (see System-Software Configurations table in this section).

Y Open the computer and verify that all circuit boards, fuses, and chips are:
secure, clean, and pps .

Perform telephone and on-site quick checks

— Duplicate problem and gather information

Go over system-crash checklist

Perform appropriate desktop procedures
and practices .

~ Check system rallare codes for clues

— Perform hardware troubleshooting

2 Sy ace - zs
: “é
Sete = > >
> :

. | internation Gathering -

When quick checks do not ientify the problem, try sdaplientng the problem,
and gather as much information about the Ben as ; possible. Take special
note of the following: fe : i a

° ~ Operating condition of the system when the problem occurs Gotan
and version, Finder™ or MultiFinder®, system software and version,
whether networked, system configuration, peripherals, INITs, CDEVs,

»’ DAS, etc.) . :
e Exactly what your customer is doing when the problem occurs
| © . What happens to the system (freezes, crashes, displays error message) _
e What your customer has tried to do to fix the problem, and the outcome
co the problem appeared recently, note what your customer Scone
changed or added to the system , i

: Using this iglorianon: perform appropriate solutions from the Olloning=
. | __. System-Crash Checklist. If this systematic approach does not fix the problem,
your customer probably has a hardware problem (refer. to "Hardware ©
Troubleshooting" later in this section).

, yf

TOG a ee : ae on On-Site Troubleshooting

Software Troubleshooting

System-Crash Checklist

~Y Check whether the problem is peculiar to one application (try
replicating the problem using another application). If the
application is at fault, consult the following chart for suggestions.

Problem

Program incompatible
with MultiFinder
(System 6 only)

Program incompatible
with system software

Program corrupted

Insufficient memory
to run program

Message “Application
is busy or missing”
displays

Programs (especially
DAs, INITs, and
CDEVs) conflict

Solutions

oy OVS

Try booting offending program first.
Switch to Finder.
Run program from original disks.

Revert to older version of system software.
Remove program from system.
Contact vendor about program update.

System crashes can corrupt program and system software.
Remove program.

Reinstall program and system software from original disks.
Reinstall system software.

lf under MultiFinder or System 7, close other applications and
restart program. (You may have to restart system.)

If under MultiFinder, switch to Finder (System 6 only).
Allocate more memory to application. Select application,
select Get Info from menu bar, and increase allocated
memory in dialog box. (MultiFinder or System 7 only)

lf applicable, check RAM cache. If cache is set too high,
computer diverts some RAM for system use, thus reducing
RAM available for programs.

Install additional RAM.

Make sure application is present on drive.

Make sure document was created with same version of
application as application on drive.

Launch application first; then open document from application.
Rebuild desktop.

Reinstall application.

Run a utility program, such as Norton Utilities, that resets
corrupted bundle bits.

Run Compatibility Checker before installing System 7. Remove
or update any questionable INITs or CDEVs (System 7 only).
If program was added just prior to problem, remove offending
program.

Remove all DAs, INITs, and CDEVs, and replace one ata
time until offender is found.

Macintosh Computers, Vol. 2 17

~Y Check whether the problem is with system software (boot from a
floppy) or with multiple system folders (use Find File).

Problem Solution

Multiple system — Remove all system folders except folder with Macintosh icon
folders on it (see Desktop Procedures and Practices).

Corrupted system — Replace system software. (When replacing corrupted system
software software, avoid introducing new problems. Always use

Installer on original system software disks; do not use
System 6 Installer with System 7. If you remove System file
before running Installer, you must replace fonts and desk
accessories. Make copies of your customer’s fonts and desk
accessories before running Installer. For more information,
refer to Replacing the System File under Desktop Procedures
and Practices.

Desktop Procedures and Practices

Identifying and remedying problems that may be software related requires
familiarity with basic desktop management procedures and practices. An
inappropriately managed desktop could cause the following problems.

Multiple System Folder Problems

Symptoms:
Occurs:
Remeay:

Procedure:

System crashes; unusual error messages; font and DA lists change
unexpectedly.

When disks containing system folders are dragged onto system or system
software is loaded without using Installer.

Locate and remove all system folders without the Macintosh icon on the
folder; also remove any extra System or Finder files.

Boot from known-good system disk, use Find File to locate and remove
multiple system folders, and reboot computer.

INIT and CDEV Conflicts

Symptoms:
Occurs:
Remedy:

Procedure:

This problem is very common under System 7. Be sure to run the
Compatibility Checker before installing System 7. Remove any
questionable INITs or CDEVs (or update them with newer versions and
rerun the Compatibility Checker).

System crashes and myriad of other problems.

When INIT or CDEV conflicts with an application on system.

Locate and remove all INITs and CDEVs, and then replace them one at a
time until the conflict returns.

Place all INITs and CDEVs in a separate folder within System Folder (this
prevents INITs and CDEVs from loading when you boot system), and return
each INIT and CDEV to System Folder one at a time. (Renaming an INIT,
such as adding a prefix of “Z” so it loads last, may remedy the conflict.)

On-Site Troubleshooting

RAM Cache Out-of-Memory Problems

Symptoms:

Occurs:
Remedy:

Procedure:

RAM cache is a feature that speeds up operation of the system. The RAM
cache acts as a special RAM buffer between applications and drives. From
32K to 768K of the most frequently used blocks of data can be stored in the
RAM cache, which can significantly increase speed within an application
and cause applications to launch from and return to the Finder more
quickly. Memory problems can occur when the RAM cache is set too high.

Insufficient memory problems; applications won’t run; degraded system
performance; ID=28 system bombs in systems configured with 1 MB or less
of memory.

When RAM cache is set too high (available system memory is insufficient
to run program).

Switch off RAM cache, or reduce amount of memory allocated to RAM
cache.

Open Control Panel (System 6) or Memory Control Panel (System 7) and
reduce RAM cache allocation as desired. Reboot system.

Rebuilding the Desktop / Slow Finder

Symptoms:
Occurs:

Remedy:

Procedure:

Finder cannot locate applications that are on disk drive, or Finder is slow.
When disk is overloaded with applications and icons, or applications
contain excessive number of file comments.

Rebuild desktop file (which erases comments from Get Info comment box
of all applications on drive).

Hold down <Option> and <Command> keys while booting, or while quitting
application if operating in Finder. Click Yes in resulting dialog box to
rebuild the desktop.

Resetting Corrupted Parameter RAM

Symptoms:
Occurs:

Remedy:
Procedure:

Macintosh II does not boot from internal hard drive.

When an application crashes, it sometimes executes code that corrupts
parameter RAM (PRAM) on Macintosh II systems running system software
prior to release 5.0. PRAM contains information required by the Macintosh
operating system (OS) to start up from an internal SCSI drive, as well as
other OS information.

Reset PRAM to its default value.

System 6: Hold down <Shift>, <Option>, and <Command> keys while
opening Control Panel. Click Yes in resulting dialog box to clear PRAM,
which resets some user options to their default values.

System 7: Hold down <Option>, <Command>, , and <R> during
startup but before "Welcome to Macintosh" appears. (If using a Macintosh
Il family computer with a color monitor, the monitor will default to
monochrome; reset the color controls.)

Macintosh Computers, Vol. 2 19

Restoring Damaged Boot Blocks

Symptoms:
Occurs:

Remedy:
Procedure:

System does not recognize or boot from hard drive.

When startup instructions (boot blocks) on the hard drive are damaged or
the hard disk driver is damaged.

Replace the hard disk driver.

Boot the computer from a startup disk that contains an appropriate hard
disk setup program. (For Apple hard drives, use the Apple HDSC Setup
program found on a Macintosh System Utilities disk.) \nstall or update the
hard disk driver on the hard drive.

Removing and Preventing Viruses

Symptoms:
Occurs:

Remedy:

Procedure:

Prevention:

Unexplained system crashes; corrupted or disappearing files.

After using a disk or program that is infected by a virus (often contracted
from shareware found on electronic bulletin boards).

Use an antivirus program to eradicate the virus, and practice virus
prevention in the future.

Boot the computer from a startup disk that contains an antivirus application
and launch the eradication program. There are several effective antivirus
programs, including Disinfectant by John Norstad, /nterferon and Virex by
Robert Woodhead, and SAM from Symantec.

Many of the antivirus applications include programs for screening inserted
disks for known viruses—use them! Also, master disks should be locked;
applications can be protected by locking them using the Get Info box. If
running System 7, be sure the virus utility is System 7 compatible.
Incompatible versions can cause unexpected problems that are difficult to
track down.

Replacing the System File (System 6 only)

Symptoms:
Occurs:

Remedy:

Procedure:

Apple Files:
(System 6)

Minor, intermittent problems accessing disks, printing, starting system, or
launching programs.

When System file or related files are damaged, often from disk writing
errors.

Replace the System file using the Installer. To ensure that the problem is
corrected, you should remove the entire System Folder before using the
Installer.

Copy all non-Apple System Folder files from the System Folder to another
folder on the desktop (see list of Apple System Folder files below). Then
drag the System Folder into the Trash and start up the Installer program
from the original system software disk. Place the non-Apple files in the
new System Folder. (For information about using the Installer, refer to
"Replacing/Installing System Software" later in this section.)

Access Privileges Key Layout MultiFinder Finder
Backgrounder AppleShare Keyboard Mouse
Clipboard File DA Handler Responder Color
Startup Device Easy Access Monitors system
Scrapbook File Finder Startup General Sound

On-Site Troubleshooting

System Failures

You are experiencing a serious system failure if your screen fills with dots,
strange patterns, or garbage characters, or your computer emits sounds similar
to muted gunfire. Other system failures, often called crashes, can result in a
hung system (for instance, your cursor is frozen in place on the screen) or a
system bomb with an error message and ID number. Often your only
alternative is to press the reset button on the programmer’s switch or restart
the computer. However, if you encounter an alert box containing an error
message and code, check the error code against one of the tables on the
following pages.

You can encounter three types of Macintosh system error codes: boot (Sad
Mac®) error codes, system error codes, and negative value error codes.
Explanations of these error codes can be found in the following tables. When
possible, these explanations include suggestions that may help isolate the
problem. Additional suggestions are given below on this page. If these
suggestions and _ the software troubleshooting recommendations on the
previous pages of this section do not help, you probably have a hardware
problem. Refer to "Startup Problems—Flowcharts” later in this section.

Introduction

Sad Mac, system, and application error codes can help lead you to the source
of the problem. If the error code tables do not recommend a solution, or the
solution does not fix the problem, keep in mind that serious system failures
can be caused by:

¢ Software problems (damaged program or system files, incompatible INIT
files)

¢ Data problems (damaged or incomplete data files, corrupted PRAM)

¢ Damaged boot blocks

¢ Hardware problems

To rectify system problems, try rebuilding the desktop and restarting your
system. If this procedure does not rectify the problem, use another startup
disk and try:

Removing INITs from your system (especially INITs added recently)
Checking the disk for a virus

Replacing the System file and Finder using Installer

Replacing the application with a fresh copy from the master disk
Resetting PRAM

Restoring the boot blocks

Se oe

For instructions on performing these procedures, refer to Desktop Procedures
and Practices earlier in this section.

Macintosh Computers, Vol. 2 21

System Failure Codes

Sad Mac Error Codes

If a Macintosh Plus fails at startup, you will see a Sad Mac icon and a six-digit
error code. Ifa Macintosh SE fails at startup, the problem is usually bad RAM
and you will see a 16-digit SIMM error code (see the Macintosh SE chapter in
Volume 1). If other Macintosh computers fail at startup, you will hear a series
of error chords (see Flowchart 2, Startup and Error Chords).

Sad Mac error codes can mean that the computer has failed the internal
diagnostic tests and you have a hardware problem. Sad Mac codes can also
have less serious causes such as:

¢ —Anon-system disk in the default drive

e Abad boot disk =
e — An incompatible system file on the boot disk
¢ — No Finder on the boot disk

e Astuck programmer’s switch Sad Mac Icon

Sad Mac Error Codes

ROM test failure OFOO06 | Overflow trap - TRAPV instruction2

RAM test failure (bus subtest)! OFOO007 | Privilege violation2

RAM test failure (byte write)! OFO008 | Trace trap?

RAM test failure (mod3 test)! OFO009 | Trap dispatcher error?

RAM failure (address
———— | uniqueness)!

OFOOOA , Line 1111 trap2

——

OFOO001 Bus error2 OFOO0OB | Other trap

OFO0002 Address error2 OFOOOC | Unimplemented trap executed2

Interrupt button, programmer's

OFO003 Illegal instruction OFOOOD switch2.3

OFO004 Zero divide OFO064 | Bad System file2:4

OFO005 Check trap - CHK instruction? OFOO65_ | Bad Finder2

1 The first two digits indicate a RAM failure; the last four digits identify (in hexadecimal) the

suspected bad chip. Try removing the SIMMs, rubbing the connection area with an eraser to
improve the connection, and replacing the SIMMs. If this procedure doesn't help, isolate the
bad SIMM (refer to Flowchart 3, SIMM Verification).
"OF" indicates a software error—the startup device was spinning before the failure occurred.
Try: (1) Restarting the computer with the <Option> and <Command> keys held down
(rebuilding the desktop) or (2) Replacing the System file.

3 Check the interrupt button—it could be stuck.

4 The System file may be missing from the startup drive.

On-Site Troubleshooting

System Error Codes

The two-digit system error code is located in the lower-right corner of the
dialog box that informs you ”A serious system error has occurred.” Refer to
the following two tables for a list of these codes and an explanation of their

meaning.

System Error Codes

(eode [Tvs Meaning

Bus error

Program attempts to access an invalid memory location. Error is
often caused by corrupt application. Replace application with
known-good copy or upgraded version. If replacing software does
not help, the problem is probably hardware related.

Address error

A corrupt application has placed program information in an odd vs.
even address location. Install a known-good copy or upgraded
version of the application.

Illegal instruction

Processor receives an instruction that does not match its internal list
of instructions.

zero divide

Programmer told processor to divide by 0 (mathematically
impossible).

Range check error

Overflow

Index is out of range (for example, programmer declares an array of
five elements and searches for the sixth).

Computer attempts to store a number that is too large for the allotted
space.

Privilege violation

68000 is running in "user" mode and attempts to execute a
command that requires "supervisor" mode.

Trace mode error

Line 1010 trap

68000 chip can trace itself for debugging; can interfere with normal
execution.

Processor cannot execute a ROM call accessed via a trap with a
hexadecimal "A" code. Often caused by a corrupt application.
Replace application with a known-good copy or upgraded version.

Line 1111 trap

An incorrect ROM call.

Exception error

A miscellaneous hardware error not covered elsewhere.

Unimplemented
core routine

Uninstalled
interrupt

Occurs when program attempts to execute a ROM call via an
undefined trap.

Needed routines are not available or the interrupt switch is pressed
when a runtime debugger is not present.

I/O core error

Error in the file system or the device manager system.

Segment loader
error

System could not load needed segment from disk into RAM memory.
Often caused by a corrupt application. Replace application with a
known-good copy or upgraded version.

Floating point error

A mathematical error.

Macintosh Computers, Vol. 2 23

17-24

Packages not
present (0-7)

System tries/fails to read special sections of the System file called
"packages." System file may be damaged.

Memory full

Program requests a chunk of memory, but the system couldn't find enough.

Bad program
launch

Attempt to load program without a CODE resource of 0; program is
not a real program. Often caused by a corrupt application. Replace
application with a known-good copy or upgraded version.

File system map
damaged

Something is wrong with information on the disk. Try rebuilding the
desktop.

Stack ran into
heap

Two competing areas, the stack and heap, have collided. You're out
of memory or memory is not being managed properly.

Disk insertion sak

No disk insertion

negZcbFreeErr

ZcbFree has gone negative.

Finder error

Attempt to boot with startup disk that does not contain Finder. Create
a new startup disk.

Bad slot interrupt

Unserviceable siot interrupt.

Bad SANE
opcode

Bad opcode given to SANE Pack 4.

Menu purge error

Happens when a menu is purged.

MBarNFnd

System error—cannot find MBDF.

HMenu Find error

System error—recursively defined HMenus.

WDEFnFND

Could not load WDEF.

CDEFnFND

Could not load CDEF.

MDEFnFND

Could not load MDEF.

No patch

Can't patch for particular model Macintosh.

Bad patch

Can't load patch resource.

101

Parity error

Memory parity error.

102

Old System

System is too old for this ROM.

103

20000

32-bit mode

Shut down or
restart

Booting in 32-bit mode on a 24-bit system.

User can choose ShutDown or Restart.

20001

Switch off or
restart

User can choose to switch off or Restart.

20002

Forced quit

Allows user to exit to Shell.

32767

System error

General system error.

On-Site Troubleshooting

Negative Value Error Codes

Rather than receive an error message such as “The disk is locked,” you may
receive a negative value error code such as -44. Refer to the Negative Value
Error Codes table below for these codes and their general meanings. If you
need more specific information, refer to the Technical Info library on
AppleLink®,

Negative Value Error Codes

General system errors

Color manager errors

-17 to -30
-33 to -61
-64 to -66
-64 to -90
-91 to -99
-100 to -102

I/O system errors

File system errors

Font manager errors

Disk, serial ports, clock specific errors

AppleTalk errors

Scrap manager errors

-108 to -117 Storage allocator errors

-120 to -127 HFS errors
-126 to -128
-130 to -132
-147 to -158

Menu manager errors

HFS file ID errors

Color QuickDraw and color manager errors

-185 to -199

Resource manager errors (other than I/O)

-200 to -232
-250 to -261 MIDI manager errors

Notification manager error
-290 to -351 Start manager errors

-360 & -400

Sound manager errors

Device manager slot support errors

-450 to -463 Edition manager errors

-470 to 489 SCSI manager errors

Macintosh Computers, Vol. 2 25

Code Error Type

-500 QuickDraw error

Text edit error

| O/S error

-501

-502
-600 to -610

Process errors

-620 to -625 Memory dispatch errors

-800 to -813 Database access (Pack 13) errors

-850 to -863 Help manager errors

-900 to -932 | AppleTalk — PPC toolbox errors

-1024 to 1029 AppleTalk — NBP errors

-1066 to -1075 ASP errors (XPP driver)

-1096 to -1105 AppleTalk — ATP errors

-1273 to -1280 Data stream protocol — DSP driver errors

HFS errors

-1300 to -1305

-1700 to -1719 AppleEvent errors

-3101 to -3109 AppleTalk — ATP errors

-4096 to -4101 Print Manager w/LaserWriter errors

-5000 to -5021 File manager extensions errors

-5000 to -5032 AFP errors (XPP driver)

-5500 to -5502 SysEnvirons errors

-5550 to -5553 Gestalt errors

-8132 to -8160 LaserWriter driver errors

-11000 to -10005 | Pictlinfo errors

-13000 to -13005 | Power manager errors

-23000 to -23048 | Mac TCP errors

-32640 & -32768 | Primary or secondary INIT code errors

On-Site Troubleshooting

Hardware Troubleshooting

Isolating a Hardware Problem

System Self-Tests
Diagnostic Software

Symptom/Cure
Charts

—{~ Diagnostic error chords

System error codes

MacTest

Macintosh Hard Drive Test

Symptom/cure charts

Module swapping

Troubleshooting

Flowcharts Startup problem flowcharts

e System Self-Tests—Start up the customer’s system, listen for diagnostic
error chords (see Flowchart 2, Startup and Error Chords in this section),
and look for system error codes (refer to "System Failure Codes" in this
section).

e Diagnostic Software—If the system passes the self-tests but the problem
persists, try running the appropriate MacTest™ program (refer to
"MacTest" later in this section for MacTest versions and procedures). If
you suspect a hard drive problem, you should also run the Macintosh
Hard Drive Test program.

e Symptom Charts/Module Swapping—If the customer’s system (or
MacTest) does not boot or MacTest fails to find the problem, refer to the
symptom/cure charts in the section that covers your customer’s
computer. If you think you recognize the problem and you have the
necessary replacement module with you, try module swapping.

¢ Troubleshooting Flowcharts—If the customer’s system (or MacTest) does
not boot or MacTest fails to find the problem and the problem is not
clearly defined or not listed in the symptom/cure charts, refer to "Startup
Problems—Flowcharts” at the end of this section. These flowcharts
present a step-by-step procedure for isolating the problem.

Macintosh Computers, Vol. 2 27

Hardware Troubleshooting Guidelines

1.
2:

Use only known-good test equipment and diagnostic programs.

The troubleshooting tools are designed to test a system in its minimum
configuration. Disconnect external peripherals and remove all NuBus™
cards. After verifying that the computer is fully operational, reinstall or
reconnect and test each expansion card and external device one at a time.
When using the symptom/cure charts, always try the solutions one at a
time, in sequence, until you fix the problem. If the problem remains,
reinstall the original module before trying the next solution.

The hardware troubleshooting flowcharts verify each repair action by
looping back to the start (Flowchart 1). If a repair does not fix the
problem, reinstall the original module, return to the flowblock of origin,
and perform the next repair action on the list.

When instructed to replace the logic board only, place the customer's
SIMMs on the replacement logic board. Be sure to use the SIMM removal
tool (see "Special Tools Index" under General Information). To test the
customer’s SIMMs, refer to Flowchart 3, SIMM Verification, in this section.
Always verify that the original problem has been fixed. To verify that the
original problem is fixed, duplicate the conditions under which it
appeared. To verify that there are no additional faults, run MacTest.

On-Site Troubleshooting

Startup Problems—Flowcharts

START

Turn on system
without startup disk.

NOTE: At startup crip No Go to
you should hear sequence Flowchart 2
medium-pitched normal? GEES,

soft chord.

Yes

Does
disk icon with
smiling face or
flashing "?"
appear?

No Go to
Flowchart 4.

Yes
Boot appropriate
MacTest disk.

Does
test screen
appear?

Yes

Shut down and install
known-good MacTest disk.
Switch on power.

Does
test screen
appear?

No Go to
Flowchart 6.

Yes

Run MacTest. Run
Macintosh Hard Drive

Test. Verify no faults.

Flowchart 1 Startup Problems

Macintosh Computers, Vol. 2 29

START

If an error is encountered at

startup you will hear:

1. A medium-pitched, soft
startup chord (normal).

2. An error chord (not
normal).

3. A test monitor chord

(four chords, low to high).

Pay close attention to the
error (second) chord.

Initial hardware self-tests failed.
Is 1. Replace the logic board only.
error chord Install customer's SIMMs on
a short, harsh the replacement logic board.
chord? 2. Install exchange SIMMs on
customer's logic board.
3. Verify customer's SIMMs.

Is
error chord
a meduim-
pitched

chord?

Yes

ae self-test failed.
. If system is Macintosh Ilfx, check
for NEC SIMMs. Replace NEC
SIMMS with date code below 9052.
. Install exchange SIMMs in Bank
A of customer's logic board
. Install exchange SIMMs in Bank
B of customer's logic board.
. Replace the logic board.
. Verify customer's SIMMs.

Go to
Flowchart 3.

Is
error chord
a meduim-pitched
then high
chord?

Return to
Flowchart 1.

aor WwW Nh

Flowchart 2 Startup and Error Chords

30 On-Site Troubleshooting

NOTE: When verifying SIMMS,
you need:
1. AS many known-good SIMMS
as SIMM slots in each bank
of the customer's logic board.
2. Known-good SIMMs the same
size as the customer's SIMMs.

. Switch off system power.

. Remove, mark, and set
aside the customer's bad
SIMM.

. Check next customer's
SIMM.

. Switch off system power.

. Remove another known-
good SIMM.

. Install another of the
customer's SIMMs.

START

Install known-good SIMMs in Bank
A. Leave one SIMM slot empty.

Install one of the customer's SIMMs
in the empty slot in Bank A.

Place the drive mount into position,

connect one drive cable only, and

switch on system power.

Do you
hear normal
startup chord and
see disk with

flashing
moe ?

Yes

Is
this the last
customer SIMM to
be installed
in Bank
A?

Yes

Repeat for Bank B.

Is
this the last
customer SIMM to
be installed
in Bank
B?

Flowchart 3 SIMM Verification

Macintosh Computers, Vol. 2

Return to
Flowchart 1.

START

1. Disconnect hard drive power
and data cable connectors.
2. Disconnect disk drive 2 cable.
3. Run system from drive 1 only.

Switch on system without startup disk.

NOTE: Suspected problem
areas include system video,
system logic and control, and
system power.

NOTE: You must install a filter
block and terminator to boot a
Macintosh Ilfx with the hard
drive power and data cable
connectors disconnected.

and fan

Does
disk icon with
flashing "?"

Go to
Flowchart 6
section A.

displaying
unrecognizable
garbage?

Is an
error icon
displayed?

. Replace video cable.
. Replace monitor. If now OK,

. Replace video interface card.

. Replace logic board SIMMs. Go

. Replace logic board. Be sure

. Replace power supply.

Go to
Flowchart 5.

running?

troubleshoot monitor. If not
OK, go to box below.

If now OK, troubleshoot replace-
able RAM on bad card.

to Flowchart 3 SIMM Verification.

to install customer's SIMMs on
replacement logic board.

Go to
Flowchart 6.

Flowchart 4 Startup Problems

On-Site Troubleshooting

START

NOTE: Suspected problem

areas include system video,

system logic and control, and

system power.

Turn off system power, remove the top cover,

and check the lithium batteries with a volt-

meter. The batteries must read:

¢ 2.8 V or higher - Macintosh SE, SE/30, Ilcx,
Ici, Ilvx, Ilvi, and Performa 600.

¢ 3.0 V or higher - Macintosh Classic, Classic
Il, LC, LC ll, Ilsi, Performa 200, and
Performa 400.

¢ 3.2 V or higher - Macintosh Il, IIx, IIfx, Quadra

700, and Quadra 900/950.

Are 1. Replace power supply.
batteries 2. Replace logic board. Be sure
OK? to install customer's SIMMs on
replacement logic board.

Go to
Flowchart 7.

Replace bad batteries
and continue procedure.

Is
LED lit
and fan
running?

. Replace video cable.

2. Replace monitor. If now OK,
troubleshoot monitor.

3. Replace video interface card.
If now OK, troubleshoot replace-
able RAM on bad card.

4. Replace logic board SIMMs. Go
to Flowchart 3 SIMM Verification.

5. Replace logic board. Be sure
to install customer's SIMMs on
replacement logic board.

. Replace power supply.

Return to
Flowchart 1.

Does
disk icon
with smiling face
or flashing "?"
appear?

Go to
Flowchart 7.

Flowchart 5 Startup Problems

Macintosh Computers, Vol. 2

NOTE: Suspected problem
START areas include the input/output
devices, hard drive, system

logic and control, and system
power.

If necessary, switch off system and

disconnect:

1. Hard drive power and data cable
connectors.

2. Second disk drive cable.

Boot MacTest disk.

1. Replace drive 1 cable.
Does 2. Replace disk drive 1.
test screen 3. Replace power supply.
appear? 4. Replace logic board. Be sure
to install customer's SIMMs on
replacement logic board.

Return to
Flowchart 1.

Run MacTest.

Switch off system power and
reconnect second drive if pre-
sent. Switch on system power.

1. Replace drive 2 cable.
2. Replace disk drive 2.
3. Replace power supply.
4. Replace logic board. Be sure
to install customer's SIMMs on
replacement logic board.

Return to
Flowchart 1.

Does
disk icon
with smiling face
or flashing "?"
appear?

Boot MacTest disk.

Does
test screen
appear?

Yes

Go to
Flowchart 7.

Flowchart 6 Startup Problems

34 On-Site Troubleshooting

NOTE: Suspected problem
areas include the hard drive,
system logic and control,
and system power.

START

Run MacTest.

Switch off system power and
reconnect second drive if pre-
sent. Switch on system power.

—_h

. Replace hard drive power and
data cables.

. Replace hard drive.

. Replace power supply.

. Replace logic board. Be sure
to install customer's SIMMs on

replacement logic board.

Return to
Flowchart 1.

Does
disk icon
with smiling face
or flashing "?"
appear?

& WP

Boot MacTest disk.

Does
test screen
appear?

Run MacTest. Run
Macintosh Hard Drive
Test. Verify absence
of faults.

Flowchart 7 Startup Problems

Macintosh Computers, Vol. 2

Replacing/Installing System Software

You may need to install system software at the customer’s site. Replacing hard
drives on systems that shipped with the operating system already installed
requires reinstalling system software.

Installing System Software Versions 6.0.2 to 6.0.4

You'll need System Software, version 6.0.2, 6.0.3, or 6.0.4 (System & Printing
Tools, Utilities 1 & 2).

1. Insert the System Tools disk in a floppy drive, and switch on the
computer.

2. Double-click on the System Tools disk icon, the Setup Folder, and
Installer.

3. Select the drive on which you want to install system software. Click
Drive until you see the desired drive.

4. Select your computer type and click Install.

5. When finished, quit the Installer and reboot.

Installing System Software Versions 6.0.5 to 6.08

The Installer has Easy Install and Customize options. Easy Install automatically
installs system and printer software that is appropriate for the destination drive
and your computer. You must use the Customize option to install
AppleShare® workstation software. You can also use the Customize option to
create a boot disk with the minimal software required for any Macintosh
system.

You'll need System Software, version 6.0.5, 6.0.6, 6.0.7, or 6.0.8 (System &
Printing Tools, Utilities 1 & 2, and HyperCard®),

1. Insert the System Tools disk in a floppy drive and switch on the
computer.

2. Double-click on the System Tools disk icon and on the Installer.

3. When the welcome screen appears, click OK.

4, Select the drive on which you want to install system software. Click
Switch Disk until you see this drive.

5. Easy Install: Click Install. The appropriate software is automatically
installed.
Customize: Click Customize. Then select (click or shift-click) the
software you wish to install from the options listed in the scrollable
window. Click Install. The selected software is then installed.

6. When finished, quit the Installer and reboot.

On-Site Troubleshooting

Installing System Software Version 7 or Later

Note It's a good idea to make a backup copy of your hard drive before you install

System 7.

1. Insert Before You Install System 7 into a floppy drive.

2. Click on the Compatibility Checker option. If you see a button labeled Set
Up, click the Set Up button, then choose which disks you want to check.

3. Click Start Checking. The Compatibility Checker scans your system and
displays messages that report the progress of the scan.

4, If the Compatibility Checker finds incompatible or unknown items in the
System Folder of your startup disk, you'll see the message "Attention:
Potential problems with System Folder items." To move these items out
of your System Folder, click Move Items.

5. When the Compatibility Checker finishes examining your system, you'll

Item

Incompatible or
unknown items in
the System Folder

see the results displayed on the screen. The table below lists what you
should do about each type of item on the report.

What to Do

Remove these items from the System Folder before installing
System 7. (If you used the Move Items button, these items have
already been moved to the May Not Work With System 7 folder.)

Other incompatible or You can install System 7—however, you should upgrade to a

unknown programs

Mostly compatible
programs

compatible version of these programs before using them with
System 7.

No action is necessary. (If you like, you can obtain a more recent
version.)

Compatible programs No action is necessary.

10.
11.

Insert the Install 1 disk into a floppy drive, and switch on the computer.
The Installer welcome screen appears.

Click OK to clear the welcome screen. The dialog box that appears
provides two options—Easy Install and Customize. Easy Install is suitable
for most Macintosh users.

Select the drive on which you want to install system software. Click
Drive until you see the desired drive.

Click Install.

Follow the on-screen instructions, and insert other floppy disks as requested.
When you see a message reporting that the installation was successful,
click Quit.

Macintosh Computers, Vol. 2 37

System-Software Configurations

Macintosh Recommended System and Acceptable System and
Computer Finder Versions Finder Versions

System 6.0.7/Finder 6.1 System 7*
System 6.0.8/Finder 6.1

System/Finder 7.0.1 System 7*

Performa 400, | System 7.0.1P System/Finder 7.0.1
600

ll System 3.2/Finder 5.3 System 4.1/Finder 5.5
System 3.3/Finder 5.4 System 4.2/Finder 6.0
system 3.4/Finder 5.4 System 7*

system 6.0.5/Finder 6.1
System 6.0.7/Finder 6.1
System 6.0.8/Finder 6.1

IIx, Ilex System 6.0.3/Finder 6.1 System 7*
system 6.0.4/Finder 6.1
System 6.0.5/Finder 6.1
System 6.0.7/Finder 6.1
System 6.0.8/Finder 6.1

System 6.0.4/Finder 6.1 System 7*
system 6.0.5/Finder 6.1
System 6.0.7/Finder 6.1
thesysiem 6.0.8/Finder 6.1

System 6.0.5/Finder 6.1 System 7*
System 6.0.7/Finder 6.1
System 6.0.8/Finder 6.1

livx, Ilvi System/Finder 7.0.1 System 7*

Quadra 700, System 6.0.3/Finder 6.1
900, 950 System 6.0.4/Finder 6.1
System 6.0.5/Finder 6.1
System 6.0.7/Finder 6.1
System 6.0.8/Finder 6.1

* These computers will run System 7 if they have sufficient memory.

38 On-Site Troubleshooting

MacTest

When used as stand-alone tests, the MacTest diagnostic programs perform
pass/fail functional tests of the Macintosh computer systems. The procedures
for using all MacTest programs are similar, but not identical. Be sure to use
the MacTest program for the system you want to test. The following table lists
the MacTest program you need to test Apple products.

MacTest Diagnostics

Diagnostic Products Tested

MacTest Pro Macintosh SE/30

Macintosh Classic II

Macintosh PowerBook 100, 140, 145, 160, 170, 180
Macintosh PowerBook Duo 210, 230
Macintosh Performa 200, 400, 600
Macintosh LC, LC Il

Macintosh Il, IIx, llfx

Macintosh IIcx

Macintosh IIvx, Ilvi

Macintosh Quadra 700, 900, 950
Macintosh NuBus video cards
Macintosh monitors and displays
Macintosh drives and storage devices
Macintosh modems

Apple Ile Card

MacTest CL Macintosh Classic

MacTest Portable | Macintosh Portable

MacTest MP Macintosh IlIsi
Macintosh Ilci Cache Card

MacTest Ilcx/IIci Macintosh IIci
PC 5.25 Drive Card

ane Soe
MacTestv. 7.0 Macintosh 128K, 512K, Plus

MacTest SE v3.0 Macintosh SE

Be sure to read the Read Me file that accompanies the MacTest Pro diagnostic.
This file has the latest information about and operating tips for running the
diagnostic.

Things to Remember

¢ Use Apple DiskCopy 4.2 to make a backup copy of the MacTest disks. Do
not write-protect your working disk.

¢ Some MacTest Pro bootable disks contain special System Enabler files for
use on Macintosh Ilvi, IIvx, Performa, and Macintosh PowerBook 160/180
systems. Do not remove these files from the bootable disks.

Macintosh Computers, Vol. 2 39

If you cannot boot the MacTest disk:

a. Check the power cable and internal cable connections.

b. Refer to the appropriate symptom/cure chart, and replace the
module(s) specified for your problem.

(Macintosh Portable only) The power adapter must be connected to

the Macintosh Portable for the AppleCat®/MacTest diagnostic to

operate.

The application memory partition of MacTest Pro is set to 800K, but

1024K is the preferred setting. If the computer under test has more than

2 MB of RAM, Apple suggests you set the application memory partition to

1024K. (Click once on the the MacTest Pro application icon to highlight

it. Select Get Info from the File pull-down menu and set the memory

size to 1024K.)

Do not press the reset or interrupt switch while the RAM test is running.

Pushing reset causes the RAM test to fail, and pressing interrupt could

damage the MacTest disk.

After completing the repair, always run MacTest to verify that there are no

other faults.

Running MacTest

(Macintosh Portable only) Plug in the power adapter and connect it to

the Portable.

Connect the following loopback equipment:

¢ For MacTest Pro: No loopbacks needed unless you're running the
COMM Test TMOD. Use a serial loopback cable (mini DIN-8 cable)
between serial ports when running the COMM Test TMOD.

¢ Macintosh 128K/512K: DE-9 serial port plugs (2) to serial ports.

¢ Macintosh Classic and IIci: SCSI loopback test card to SCSI port and
serial loopback cable (mini DIN-8 cable) between serial ports.

(Macintosh Portable only) Reset the power manager by simultaneously

depressing and then releasing the reset and interrupt switches.

Boot the MacTest disk.

Select tests from the Test Selections menu.

To loop on selected tests, select Loop On Selected Tests from the Test

Selections window.

Click Start.

On-Site Troubleshooting

If you have any problems launching or running MacTest Pro, try the following:

e — Turn off screen savers before running tests.

e Remove, disable, or turn off INITs, control panel devices (CDEVs), and
desk accessories (DAs).

e If you're using System 7, turn off virtual memory and file sharing, or use
the Memory Control Panel to put the machine into 32-bit addressing
mode. Then restart the computer.

e Use the Chooser to set AppleTalk to Inactive, and then restart the
computer.

e When using Apple Video Cards Tests, Display Test Patterns, or Macintosh
Quadra 700/900/950 Tests, initialize the attached monitors by using the
Monitors Control Panel.

¢ Do not launch or run other applications before, after, or while you are
running diagnostic tests without restarting the machine.

e After running destructive tests, save the test log if desired, and then
restart the computer. Do not print the test log or run any other
application before you restart the computer.

e — Run tests twice if there is any doubt about test results or any question
about the operation of the computer

e Remove any test module files that aren't required.

If you need additional information, refer to the documentation that
accompanies the MacTest program.

Macintosh Computers, Vol. 2 41

SCSI Loopback Jumper

The SCSI loopback card must be jumpered between J1 pin 25 and RP1 pin 14
in order to be used with MacTest. New loopback cards have the jumper
etched into the card circuitry. Older versions of the card need the jumper
installed.

to SCSI Port

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: 0029p : 0002999 4 O
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a ee exe)
eae

(underside)

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Figure 1 Older SCSI Loopback Card with Jumper

Determining If a Jumper Is Needed

1. Look at the part number on the back of the SCSI loopback card.

2. If the part number ends with the letter A, the jumper is included in the
card circuitry.

3. If the part number ends with double zeros (00), check to see if the card
has an external jumper installed from J1 pin 25 to RP1 pin 14. If there is
no external jumper, install one.

Installing the Jumper

1. Locate J1 pin 25 and RP1 pin 14 on the SCSI loopback card (see Figure 1).
J1 pin 25 is the pin closest to the upper-left corner of the card; RP1 pin 14
is in the middle line of pins and closest to the left edge of the card.

2. Solder a wire connection between J1 pin 25 and RP1 pin 14 on the SCSI
loopback card.

On-Site Troubleshooting

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“ 3 + - t
: = , y ¢

Adios! : Mose ar tee f Ports, Cables, and Pin-Outs

Macintosh Quadra 900/950

Macintosh Quadra 700
Video

ORO

ee Ethernet

o(=—=)©

PD
=
ep)

Ethernet bg & | “en
Eh, @) Printer
Printer tr Apple Desktop Bus
Modem
|

Line Output
Apple Desktop Bus

@ ©
as

Microphone Input

Audio Output

Ne,
—s

Audio Output
Microphone Input

©)
KD

Macintosh LC, LC Il, Performa 400

rs |
(Ol =, od <p); OQ

Video Printer Modem SCS! Apple Audio Micro-
Desktop Output phone
Bus Input

Macintosh Computers, Vol. 2 45

Peripheral Cables

ImageWriter® E (590-0169)
ImageWriter

15-Inch . DE-9 DE-9
Apple Line™ fa
(590-0169)

ImageWriter II
ImageWriter II/L
ImageWriter II/LQ i

Apple Personal
Modem

Apple D : :
Modem 3400 = (_]

StyleWriter® (690-0552) #$LA £=- eS

(590-0551)

Te (590-0197)

300/1200
DE-9 DE-9

(699-0430)

SCSI Terminator
(658-8032)

; SCSI
Peripheral I/F Cable Mac Plus or Later
(658-8034) system

Extender Cable Cable
SCSI Terminator (658-8033) (658- \ » E z=
oa BR-50 BR-50

|
SCSI
Device
aa
|
SCSI
Device

BR-50

SCSI Terminator HDI-30 Adapter
(658-8032) or Cable (590-0718) |= PowerBook
if Ilfx (690-0705) BR-50 BR-50 100, 160, 180

cpu |

ae
DB-25 SCSI System Cable 1

(658-8031)

HDI-30 System Cable
(590-0717) PowerBook

SCSI
Device

Ports, Cables, and Pin-Outs

ImageWriter,

ImageWriter 15-inch,

AppleLine,
Cluster Controller

ImageWriter Hl, lI/L,
I/LQ;

Apple Personal
Modem;

Apple Data Modem
2400;

StyleWriter

Peripheral Cables

Part Number | Part Number
(Macintosh (Macintosh
128K & 512K) | Plus & Later)

590-0169 590-0169

and
699-0430
590-0553
or
590-0341

Cable
Model

Number | Cable Color | Cable Type

DE-9 to DB-25
Male to Male

Mini DIN-8 to
Mini DE-9
Male to Female
(adapter cable)

590-0551
or
590-0332

590-0552
or
590-0340

AppleFax Modem

Modem 300/1200

590-0552
or
590-0340

590-0197 590-0197
and
699-0430
590-0553
or
590-0341

Mini DIN-8 to
DE-9
Male to Male

Mini DIN-8 to
Mini DIN-8
Male to Male
Mini DIN-8 to
Mini DIN-8
Male to Male

DE-9 to DE-9
Male to Male

Medium
Brown

Mini DIN-8 to
Mini DE-9
Male to Female
(adapter cable)

Smoke

Beige

SCSI Devices (system

cable)

SCSI Devices
(terminator)

SCSI Devices (cable
extender)

SCSI Devices

(peripheral I/F cable)

658-8031
590-0305
or
590-0345

658-8032
590-0304
or
590-0344

658-8033
590-0307
or
590-0347

658-8034
590-0306
or
590-0346

Macintosh Computers, Vol. 2

BR-50 to DB-25
Male to Male

BR-50
Male to Female

BR-50
Male to Male

Cable Connectors

The pin numbers shown below are for the connectors attached to the ends of
the Macintosh peripheral cables, as viewed from the front of the connector.

Apple AAUI

he HDI- en. a

8 14
o =

13-Pin, Mixed-
eo D-Connector
A2 i

DIN-5

“El
@}

irra ay ie
(@ Wreererd ®) lab)

DB-19

~
(ores ‘®) =a

GHEEEEe) Oe
Gm /® SS

= BR-50
Gas
WSU UUU sme YE
~| jae

48 Ports, Cables, and Pin-Outs

Pin-Outs

External Video Connector

Signal Name _ | Signal Description
RED.GND Red video ground
RED.VID Red video
CSYNC/ Composite sync
MON.ID1 Monitor ID, bit 1
GRN.VID Green video
GRN.GND Green video ground
MON.ID2 Monitor ID, bit 2
NC No connection
BLU.VID Blue video
MON.ID3 Monitor ID, bit 3
C&VSYNC GND Composite & vertical sync ground
VSYNC/ Vertical sync
BLU.GND Blue video ground
HSYNC.GND Horizontal sync ground
HSYNC/ Horizontal sync
CHASSIS GND Chassis ground
Connector type: DA-15 male

Oo; &)/@/] mM; —

CO; N| ®

This connector is present on the Macintosh LC, LCII, Performa 400, Ilci, Ilsi, Quadra 700, Quadra
900/950, Macintosh Duo Dock, and Duo MiniDock.

The Macintosh Quadra 700 and Quadra 900/950 support all Apple-manufactured Macintosh monitors.

The Macintosh LC, LC II/Performa 400, IIvi, Ilvx, and Performa 600 support all Apple-manufactured
12- and 13-inch monochrome and color monitors.

The Macintosh Ilci and Ilsi support all Apple-manufactured Macintosh monitors except the Macintosh
Portrait Display, 21-Inch Color Display, and Two-Page Monochrome Monitor.

The PowerBook 160, 180 Duo Dock, and Duo MiniDock support all Apple-manufactured monitors,
except the 21-Inch Color Display and Two-Page Monochrome Monitor.

Macintosh Computers, Vol. 2 49

SCSI Connector — DB-25

a
[eno Suratgound
Se
[eo [SinatgoundSS
a
se

er |S gn

Connector type: DB-25 male

This connector is present on all Macintosh computers (including the Duo Dock) except the 128K,
512K, 512K enhanced, and PowerBook series.

Total length of cables should not exceed 20 feet (6 meters).

CAUTION: This interface uses the same type of connector as a standard RS-232 serial interface but
is electrically very different. DO NOT connect RS-232 devices or cables to this port. Doing so can
damage the device and the computer.

*Terminator power is not provided on the Macintosh Plus or Portable.

Ports, Cables, and Pin-Outs

Apple Desktop Bus Connector

| Pin | Signal Name _| Signal Description

1 Data Bidirectional data bus

Q* Power On/ Signal momentarily grounded to pin 4 to begin power-up
sequence in CPU

Connector type: Mini DIN-4 male

This connector is present on all Macintosh computers except the 128K, 512K, 512K enhanced, and
Plus.

Total length of all cables should not exceed 16 feet (5 meters).

“On the Macintosh II family, Quadra 700 and 900, and PowerBook series only. Pin 2 is unused on all
other models.

Macintosh Computers, Vol. 2 51

External Floppy Drive Connector — DB-19

Signal Name Signal Description

Signal ground

Signal ground
-12 volts DC
+5V +5 volts DC
+12V +12 volts DC
+12V +12 volts DC
NC No connection

PWM Motor speed control

PHO Command control line

PH1 Command control line

PH2 Command control line

PH3 Command control line
WRREQ/ Write request
HDSEL Hand select
ENBL2/ Read line enable
RD Read data
19 WR Write data
Connector type: DB-19 male

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

This connector is present on the 128K, 512K, 512K, 512K enhanced, Plus, SE, SE/30, Classic,
Classic Il, Performa 200, Portable, Ilex, IIci, Ilsi, Ilvi, Ilvx, and Performa 600.

A Macintosh 400K External Drive can be connected to the 128K, 512K, 512K enhanced, Plus, SE, and
Portable.

A Macintosh 800K External Drive or an Apple 3.5" Drive can be connected to the 512K enhanced,
Plus, SE, SE/S0, Classic, Classic Il, Performa 200, Ilcx, lici, Ilsi, Portable, Ilvi, Ilvx, and Performa 600.

Connect an Apple SuperDrive to a Macintosh SE (FDHD upgrade), SE/30, Classic, Classic Il, Ilcx, Ilci,
lisi, Portable, Ilvi, Ilvx, and Performa 600.

Connect a Hard Disk 20 to a Macintosh 512K, 512K enhanced, Plus, and SE.

52 Ports, Cables, and Pin-Outs

Ethernet Connector
Signal Name _ | Signal Description

FN Pwr +12 volts @ 175 mA +12 volts @175mAor+5volts@420mA si +5 volts +12 volts @175mAor+5volts@420mA si 420 mA

DI-A Data In circuit A
DI-B Data In circuit B

Control In circuit A
Control In circuit B

ae +5 volts (from host)

————
DO-A Data Out circuit A

Data Out circuit B

Woo Seon vane aman

Reserved

FN Pwr Secondary +12 volts or +5 volts
Protective Gnd Protective ground

Connector type: Custom 14-pin .05 spaced ribbon

This connector is present on the Macintosh Quadra 700 and Quadra 900.

Macintosh Computers, Vol. 2 53

Audio Output Connector — Stereo*

Pin Signal Name _ | Signal Description

(Sleeve) GND Signal ground

1-volt, peak-to-peak audio signal with an impedance of 47

(Tip) Left ohms’*; left channel

1-volt, peak-to-peak audio signal with an impedance of 47

(Ring) mln ohms; right channel

Connector type: Stereo miniature phone plug (3.6 mm)

This connector is present on the Macintosh SE/30, Classic, Classic Il, Performa 200, Il, IIx, Ilfx, Ilex,
lIci, Quadra 700, Quadra 900, Quadra 950, LC, LC II, Performa 400, I!si, Portable, and PowerBook
series (except the Duo 210/230).

The internal speaker is disabled when this connector is in use.

“The PowerBook 100 outputs a monaural signal on the left and right channels.

**The Macintosh Portable and PowerBook series produce a 0.75-volt, peak-to-peak signal.

Microphone Input Connector

Pin Signal Name | Signal Description

(Tip) +8V +8 volts for powering electret microphone*

Audio input with a maximum amplitude of 20 mV at 600 ohms

(Ring) lon impedance

(Sleeve) GND Signal ground

Connector type: Stereo miniature phone plug (3.6 mm)

This connector is present on the Macintosh LC, LC ll, Performa 400, Ilsi, Classic Il, Performa 200, Iivi,
Ilvx, Performa 600, Quadra 700, Quadra 900, Quadra 950, PowerBook 140,145,160,170,180, and Duo
Dock.

*Do not connect any device other than the Macintosh microphone into the microphone input connector.
The connector provides +8 volts for the microphone. Connecting incompatible devices could damage
the device or computer.

Line Input Connector

Pin Signal Description Signal Description
Audio input

(Sleeve)
This connector is presented on the Macintosh Quadra 900/950 only. Two connectors are
provided-—right and left channel. The stereo information will be internally mixed to yield a monaural
signal.

Digital ground

Connector type: RCA phono plug

54 Ports, Cables, and Pin-Outs

L
x

Io ¢

Macintosh LC, LC Il,

and Performa 400

Illustrated Parts List
Specifications
Symptom/Cure Chart
RAM Upgrades

56
58
59
63

iO
sae |
te}
|

& Performa 400

Illustrated Parts List

Top Case

805-1527

Logic Drive Cable

Board Floppy
Drive
Carrier

Lithium
Battery

815-1154

805-0137 Dr
~~ g rive
mas
Hard Bottom
Drive Case

Data
Cable

Hard
Drive
Power
Cable

Hard
Drive
Carrier

Figure 1 Macintosh LC, LC ll, and Performa 400 Exploded View

56 Macintosh LC, LC Il, and Performa 400

Bottom case (Macintosh LC) ................::ccesceeeseeseseeeeseceeeeceeeeeeeeeneeess 630-0500

Bottom case (Macintosh LC II, Performa 400)..............::::::cceeeeeees 630-0501
PATIL TOO sa iscosahowencpnneneretevaciuduuaornaundtsusaucosusacden vuasaeanevaeone 865-0066
Rear Case aCCeSS: COVER sine uc ue 815-1154
Rear CaSe access Cover SNICIC ..............ccceccccsssseeceeserersanerensaaes 805-0137

Cable, AC power, 110 V (SMOke) ...........::::ccececeeeeeeeeeeseseeeeeeeeeeeeseeees 590-0380

Fan assembly (Macintosh LC II, Performa 400) ............ eee 600-0193

Floppy drive, Apple SuperDrive, 1.4 MB mechanism .................+5 661-0474
Cable, internal SuperDrive. ..............ccccecccssseeeeeeeeeeeeeeeeeeeeeeeeeeees 590-0524
Screw, SuperDrive carrier to SuperDrive...............::seeeeeereereeees 844-0018
SuperDrive carrier (Macintosh LC) ........... eee eeeeesesereeeeeenees 805-5111
Shield, 1.4 MB Apple SuperDrive .................:.:ceeeeeeeeeeeeeeeeeeerees 805-0961

HDA, 40 MB, 1” internal, 3.5" SCSI ou... eee ceeeeceneeeeeseeeeeeeeaes 661-0614
Gable IDA BOWEN «cron citvvsnniteciure nsw drcbinesanleasnayeraanmmuesnreal 590-0303
Cable, internal HDA (SCSI connector cable).................:c:cee 590-0228
HAY CARON cen es casescuewsetinesa aan td aoe ee 805-0980
Screw, 6-32 x .25 (HDA to HDA carrier) ...............ccceeeeeeeeeeees 444-6104

Lithium: battery (W/O: leads) was ens kere awed Gye 742-0011

Logic board (Macintosh LC)................::::ccesessesseseseeeeeeeceeeeeneeeeeeseeeess 661-0593

Logic board, 2 MB (Macintosh LC Il, Performa 400) ...............8 661-0728

Logic board, 4 MB (Macintosh LC II, Performa 400) ...........0...... 661-0729
SIMMe TMB 60 1S vices es acceneeessecceceeettace oct accaectoh ree yaaa 661-0520
SIMI 2 IB BOSS rc Secrc cnaiosdsetteonnen nme senan ped eaucauncaxtennsnninvabiatsadias 661-0643
Video RAM SIMM, 512K.................cccccceeseeeececeeceeeeeeeeeeeeeeeenenens 661-0649

MICrOPNONE ASSEMBLY vdsiaiaccsschivacsdvsvsavs ssvdousaddsbacavorauiawnacdacedcasandanedens 699-5071

Mouse, Apple Desktop BUS ..............eccceeeeeeeeeeeeeeeeeeeeaenaaaereeseeeeeeenens 661-0479

Power supply (Macintosh LC) .............ccccccsssssssssseeeeeeeeceeeeaessseeeeeeeeees 661-0594

Speaker/fan assembly (Macintosh LC) ............ccccccccecceeeeeeeeeeeeeeeeeeens 630-5058

Speaker assembly (Macintosh LC II, Performa 400) .................::0+ 609-0003

Top case (Macintosh LC) «. cscecncecereid celia seatle iwadessredsoveddaaecoeeeeess 630-0505

Top case (Macintosh LC Ill).........ccesssscsecccceceeseeeseseceeeeeessesaassseeeeees 630-0507

Top case (Performa 400) .............ccccccccccssssseeeceseeseeeeesseeseeeeeesseseeeeeess 922-0833
Disk'drive SlOt COVE! cis cccctccseiiceseti ded eee eed cae tide, 815-1164
Disk drive slot Cover Shield ..............::::ccecccceeeceeeeseeeeeereeseesaaeeees 805-1527

Macintosh Computers, Vol.2 57

Specifications

Processor

Macintosh LC: Motorola 68020

Macintosh LC Il, Performa 400: Motorola 68030; burst mode RAM
access

32-bit internal data bus

16 MHz clock speed

256-byte instruction and data cache

RAM (Macintosh LC): 2 MB RAM, expandable to 10 MB; 100 ns or
faster SIMMs

RAM (Macintosh LC Il, Performa 400): 4 MB RAM, expandable to
10 MB; 100 ns or faster SIMMs

ROM: 512K

VRAM: 256K, upgradeable to 512K

LC processor-direct slot: 96-pin processor-direct slot, supporting 020
direct slot expansion card

Disk Storage

Floppy drive: Internal 1.4 MB floppy drive; optional second 1.4 MB
floppy drive on Macintosh LC

Hard drive: Internal 40 MB hard drive; optional internal 80 MB hard
drive

I/O Interfaces

ADB: One ADB port; mini DIN-4 connector

Serial: Two RS-232/RS-422 serial ports; mini DIN-8 connectors
SCSI: SCSI interface; DB-25 connector

Video: One DB-15 monitor port for built-in video; DA-15 connector
Sound: Sound input port for monaural sound input; mini phone plug

I/O Devices

Keyboard: Apple Keyboard, Apple Keyboard II, or Apple Extended
Keyboard Il; uses ADB port; mini DIN-4 connector
Mouse: ADB mouse; mini DIN-4 connector

Sound and
Video

Electrical

Sound: Monaural, 8-bit sound input with Macintosh Audio Compres-
sion Expansion (MACE) sound utility supporting 3 to 1 or 6 to 1
compression; monophonic, 8-bit sound generator supplying same
signal to both channels of stereo equipment; omnidirectional
electret microphone

Video: Built-in video supports Apple High Resolution Monochrome,
AppleColor High-Resolution RGB, Macintosh 12" RGB Display,
Macintosh 12" Monochrome Display, and Macintosh Color
Display monitors

Line voltage: 100-240 VAC, automatically configured
Frequency: 50-60 Hz
Maximum power: 50 W, not including monitor power

Physical

Height: 3 in. (7.7 cm)
Width: 12.2 in. (31 cm)
Depth: 15 in. (88.2 cm)
Weight: 8.8 Ib. (4 kg)

Macintosh LC, LC Il, and Performa 400

Symptom/Cure Chart

System Problems

Doesn't power on—
screen is black, fan is
not running, and LED
is not lit

System shuts down
intermittently

Clicking, chirping, or
thumping sound

System intermittently
crashes or locks up

System intermittently
doesn't power on

System seems to
boot, then message
“Finder is old version”
displays

Video Problems

Screen is completely
dark, fan is not
running, and LED

is not lit

Solutions

Plug monitor directly into wall socket, and verify that monitor
has power.

3. Replace power cord.

4. Replace power supply.

5. Replace logic board. Move customers SIMMs to new logic board.

1. Make sure air vents on top and sides of cover are clear.
Thermal protection circuitry may shut down system. After 30-
40 minutes, system should be OK.

2. Replace power cable.

3. Replace power supply.

4. Replace logic board. Move customer's SIMMs to new logic board.

1. Replace power supply.

2. Disconnect hard drive; replace drive if noise disappears.

3. Replace logic board. Move customer's SIMMs to new logic board.

1. Make sure System is version 6.0.7 or later (Mac LC), or
version 7.0 or later (Mac LC II and Performa 400).

2. Make sure you have known-good application software.

3. Replace system software.

4. Replace logic board. Move customers SIMMs to new logic board.

5. Replace SIMMs.

6. Replace power supply.

1. Check cables.

2. Plug monitor directly to wall socket and verify that monitor has
power.

3. Replace power cord.

4. Replace power supply.

5. Replace logic board. Move customer's SIMMs to new logic board.

1. Clear parameter RAM. (System 6: Hold down <Shift>
<Option> <Command> keys and select Control Panel from
Apple menu. Reset mouse controls. System 7: Hold down
<Command> <Option> <R> keys and reboot system.)

2. Replace logic board. Retain customer’s SIMMs.

Solutions

1. Plug monitor directly into wall socket, and verify that monitor
has power.

2. Remove expansion card, if installed.

3. Remove any external peripherals, if attached.

4. Replace logic board. Move customers SIMMs to new logic board.

5. Replace power supply.

Check cables.

Macintosh Computers, Vol.2 59

Screen is dark,

no audio, no drive,
but fan is running
and boot tone

is normal

Vertical or horizontal
lines or snow appear

on screen; or screen is

completely dark, and
boot tone is normal

Partial or whole screen

is bright and audio is

present, but no video

information is visible

Screen is dark,
audio and drive
operate, fan is
running, and LED
is lit

Drive Problems

Audio and video are
present, but

internal drive
doesn't operate

Disk ejects; display
shows icon with
blinking “X”

System won't
eject disk

System attempts
to eject disk but
can't

Or de I

2 oh

St a

Oy Oi oe

Adjust brightness on monitor.

Replace monitor.

Replace video cable.

Replace VRAM SIMM.

Replace SIMMs.

Replace logic board. Move customers SIMMs to new logic board.
Replace power supply.

Replace monitor.

Replace video cable.

Replace VRAM SIMM.

Replace logic board. Move customers SIMMs to new logic board.
Replace power supply.

Replace monitor.
Replace video cable.
Replace logic board. Move customers SIMMs to new logic board.

Adjust brightness on monitor.

Replace monitor.

Replace video cable.

Replace VRAM SIMM.

Replace logic board. Move customer's SIMMs to new logic board.
Replace power supply.

Solutions

Oe A lyes

Replace bad disk.

Verify that all external SCSI devices are disconnected.
Replace internal drive cable.

Replace internal drive.

Replace logic board. Move customers SIMMs to new logic board.
Replace power supply.

Replace disk with known-good system disk.

Replace internal drive cable.

Replace internal drive.

Replace logic board. Move customer's SIMMs to new logic board.

Switch power off and hold mouse button down while switching
power back on.

Eject disk manually by pushing opened paper clip into hole
beside the drive slot.

Replace drive cable.

Replace drive.

Try pushing disk completely back in.

Eject disk manually by pushing opened paper clip into hole
beside the drive slot.

Check that cover is on completely.

Replace drive.

Macintosh LC, LC Il, and Performa 400

SCSI Problems

Internal hard drive
runs continuously

Internal hard drive
won't operate

Peripheral Problems

Works with internal
or external SCSI
device but not with
both

Cursor doesn't
move

No response to any
key on keyboard

Known-good
ImageWriter or
ImageWriter II
won't print

Known-good
LaserWriter
won't print

Cursor moves but
clicking mouse
button has no effect

Solutions

2. Replace hard drive.

3. Replace logic board. Move customer's SIMMs to new logic board.

1. Replace hard drive data cable.

2. Replace hard drive power cable.

3. Replace hard drive.

4. Replace logic board. Move customer's SIMMs to new logic board.

Solutions

1. Check that switch setting of external SCSI device is different
priority from that of internal device.

2. Replace terminator on external device.

3. Verify that terminator is installed on internal SCSI drive.

4. Replace SCSI device select cable.

1. Reboot system.

2. Check mouse connection.

3. If mouse was connected to keyboard, connect it to rear ADB
port. If mouse works, replace keyboard. If mouse does not
work in ADB port, replace mouse.

4. Replace logic board. Move customer's SIMMs to new logic board.

1. Make sure System is version 6.0.7 or higher (LC), or 7.0 or
higher (LC Il and Performa 400).

2. Check keyboard connection to ADB port.

3. Replace keyboard cable.

4. Replace keyboard.

5. Replace logic board. Move customers SIMMs to new logic board.

1. Make sure that Chooser and Control Panel are set correctly.

2. Make sure System is version 6.0.7 or higher (LC), or 7.0 or
higher (LC Il and Performa 400).

3. Replace printer interface cable.

4. Replace logic board. Move customer’s SIMMs to new logic board.

1. Make sure that Chooser and Control Panel are set correctly.

2. Make sure System is version 6.0.7 or higher (LC), or 7.0 or
higher (LC Il and Performa 400).

3. Refer to Networks manual on Service Source.

1. Replace mouse.

2. Replace logic board. Move customer's SIMMs to new logic board.

Replace hard drive data cable.

Macintosh Computers, Vol.2 61

Can't double-click

to open an application,

disk, or server

Miscellaneous
Problems

No sound from
speaker

Clock not running

System hangs or
crashes
(Mac LC Il)

System doesn't
recognize more
than 10 MB of RAM
(Mac LC Il)

Remove duplicate system files on hard drive.

Clear PRAM. (System 6: Hold down <Shift> <Option>
<Command> keys and select Control Panel from Apple
menu. Reset mouse controls. System 7: Hold down

<Command> <Option> <R> keys during startup but

before "Welcome to Macintosh" appears. You'll hear normal
startup chords and about two seconds later, you'll hear
another chord. This means PRAM has been cleared.)

If mouse was connected to keyboard, connect it to rear ADB

port. If mouse works, replace keyboard. If mouse does not

work in ADB port, replace mouse.

Replace logic board. Move customer’s SIMMs to new logic board.

Solutions

1.
2.
3.

Verify that volume setting in Control Panel is set to 1 or above.
Replace speaker.
Replace logic board. Move customer's SIMMs to new logic board.

Replace battery.
Replace logic board. Move customer’s SIMMs to new logic board.

If using an older Macintosh Ethernet card on a Macintosh

LC Il computer, disable virtual memory.

Although you can install up to 12 MB of RAM in a Macintosh
LC Il computer, 10 MB is the maximum amount of RAM that
the system recognizes.

Macintosh LC, LC Il, and Performa 400

RAM Upgrades

Note

Macintosh LC RAM Upgrade

The Macintosh LC comes with 2 MB of RAM soldered to the logic board in
bank A and two SIMM slots for expansion memory. You can expand RAM to 10
MB, but only 1 MB RAM SIMMs are currently available for the Macintosh LC.
When you expand system memory, fill both expansion slots with SIMMs of the
same size. You can mix SIMMs of different speeds, as long as both SIMMs are
100 ns or faster.

Use the SIMM removal tool when removing SIMMs from the logic board. See
"Special Tools Index" in the General Information section.

Macintosh LC Memory Configurations
Total RAM RAM SIMM Slots

2 MB soldered RAM

2 MB soldered RAM Two 1 MB SIMMs
2 MB soldered RAM Two 2 MB SIMMs
i.
2 MB soldered RAM Two 4 MB SIMMs
96-Pin System Bank A RAM Sockets Power
Expansion ROM RAM (Bank B RAM) Supply
Connector Connector

Connector ss
Second SCSI SCSI Battery VRAM SIMM Disk Drive
Disk Drive Power Connector Connector Connector Connector

Connector Connector

Figure 2 Macintosh LC Logic Board

Macintosh Computers, Vol.2 63

Macintosh LC Il and Performa 400 RAM Upgrade

The Macintosh LC II and Performa 400 come with 4 MB of RAM soldered to the
logic board in bank A and two SIMM slots for expansion memory. You can
expand system memory to 10 MB. To expand system memory, both expansion
slots must be filled with SIMMs of the same size. You can mix SIMMs of
different speeds, as long as both SIMMs are 80 ns or faster.

Note Use the SIMM removal tool when removing SIMMs from the logic board. See
"Special Tools Index" in the General Information section.

Macintosh LC Il and Performa 400 Memory Configurations
Total RAM RAM SIMM Slots

4 MB soldered RAM Empty
i

4 MB soldered RAM Two 1 MB SIMMs

| 4 MB soldered RAM Two 2 MB SIMMs

4 MB soldered RAM Two 4 MB SIMMs

96-Pin System Bank A RAM Sockets Power
Expansion ROM RAM (Bank B RAM) Supply
Connector Connector

Cp)
ke)
SS.
OO ells
| | | VRAM SIMM
Connector
J UN ALT
SCSI SCSI Battery Speaker Fan Disk Drive
Power Connector Connector Connector Connector Connector

Connector

Figure 3 Macintosh LC Il and Performa 400 Logic Board

64 Macintosh LC, LC II, and Performa 400

0 ODO ONO OOOO OCOOOOOOO OOO OOeOeoeoeooano0N0°o

Macintosh Il, IIx,
and If

Illustrated Parts List
Specifications—
Macintosh II
Specifications—
Macintosh IIx
Specifications—
Macintosh IIfx
Symptom/Cure Chart
Macintosh II and IIx
Memory Upgrades
Macintosh IIfx
Memory Upgrade
Macintosh Il Upgrades
SCSI Termination—
Macintosh Ilfx
SIMM Replacement—
Macintosh IIfx

><
Qo
=
<

Illustrated Parts List

Top Cover
Hard Drive
Data Cable
Hard Drive
Power Hard Drive
Cable
Hard Drive
Floppy
Drive Frame
Cable
@
Floppy
Drive Metal Housing/
Shipping
Fixture
Drive
Carrier

Plate a
“%e— 426-3401

Power
Supply

a EMI Fence
eZ ia On/Off

Button

Logic Board

oc => AC Power
| Cable

eo Bottom Cover

Reset/Interrupt
me Switch

Figure 1 Macintosh Il, Ilx, and Ilfx Exploded View

66 Macintosh Il, IIx, and Ilfx

Bottom cover assembly, Macintosh II .............:.:sceceeeeeeeceeneeeeseeeeeeeees 630-5227

Bottom cover assembly, Macintosh IIx .............::cccccccssseeeeeeseeeesaeenes 630-5494
Bottom cover assembly, Macintosh IlfX ............ceccccsssseeeceeeseeserennees 630-5806
PODS OGO Sisicedorcirsaes teach in ctud ante atncaee boaed smcubeteeasi van tasuesustnsveutae 825-1256
ReSStINtSrrUbt SWITCH iavcwersicseluin Gaeta pact avereencesteanearieaxeevenias 815-6024
DISA Cl ssgapeluiaranincosmarichewntislaniontannadtebanitebenpasanemanieetnerantaneereaeueise 630-5222
Cable, AC power, 110 V (Smoke) ............. cee ceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeenes 590-0380
Disk SIOt PIU ASSOMDLY %stecseredevcavenvievsiedevaudvadelivesdecs divans ceweetaawuesencees 630-5302
TIVE MOUNT cecatec volsansietuaces ssaneiiied syricdeannuadvacer eas cac einai duean! 805-5062
Extended KGVOOaIG ivecs.cas.sccssaelscnssveraunasasvaandcontess nasarasianuanasawnserseeerads 661-0384
Floppy drive, Apple 3.5", 800K Mechanism. ...........::::csseseeeeeeeeeeeeeenes 661-0345
Floppy drive, Apple SuperDrive, 1.4 MB mechanism .................00 661-0474
Floppy drive parts, 800K & 1.4 MB drives
Cable, 800K or 1.4 MB, 3.5" drives (red or yellow stripe)........ 590-0188
Internal drive shield, 800K (for transporting).............:::ccceeeseeees 805-0217
Metal housing/shipping fixture (for transporting)............::- 805-5050
Packing disk, 2-sided (for transporting 800K mechanisms).....003-0003
HDA, 20 MB, internal 3.5" SCSI, rev. A.........:cccceeeeeeeeeeeeeeeeeeeeeeeeeeees 661-0373
HDA, 20 MB, internal 3.5" SCSI, rev. B.u........:csssesssseeeeseeeeeeeeeeeeeeeees 661-0612
HDA, 40 MB, internal 3.5" SCSI .........cccscssssssssssessseeeeeseeteseseseseees 661-0464
HDA, 80 MB, internal 3.5" SCSI ....... ec cccccesscseseeeeeeteseeeeeeeeseeeees 661-0600
HDA, 80 MB, internal 3.5" SCSI with A/UX, v.1.1................ eee 661-0561
HDA, 80 MB, internal 3.5" SCSI with A/UX, V.2.0........ eee 661-0613
HDA, 40 MB, internal 5.25" SCSI ........ cc cccccsceeseeeseeeeeeteeeeeeeeeeeeseeeeeees 661-0391
HDA, 80 MB, internal 5.25" SCSI oo... cccceceecceeseeeeneeeeeeeseeeeeeneees 661-041 1
HDA, 80 MB, internal 5.25" SCSI with A/UX, v.1.0.1...........::cceeeee 661-0457
HDA, 160 MB, internal 5.25" SCSI. ...............ccceeeeseseseeeeeeeeseeeeeeeeeeees 661-0601
HDA parts
Cable, HDA internal (SCSI connector cable)...............cccccseeeees 590-0566
Cable, HDA internal power, Macintosh II/IIx ..............cceeeeeees 590-0505
Cable, HDA internal power (2 x 2 pin), Macintosh Ilfx............. 590-0512
Carrier, G5" CIV Cw sc Anis dindaveas rivers beens naanoaveisasecseaceuds ne ae rena 805-5066
Carrier, 3.5" drive (low side mounting holes)...................0068 805-0952
CarriGk 5.25" CNV G cases sactnenecancdseciednecstene dot unde sacuessenstnantedaaeeeeed 805-5051
Screws, M 3.5 x .6 x 8 mm, PNCR e@C...........::csscccceeceeeeeeeereees 462-4100
SCSI cable terminator II, black (Mac IIfX) .............cececessesseeeeees 590-0705
Keyboard, regular Apple ............:c:cscssssssssssssssesssssesesseeeeeeeeeeeeeeeeeeeenss 661-0383
Logic board, Macintosh II (w/o RAM; replaces 661-0374)............... 661-0528
Battery holder board (2 Pack) ............ccceecceeeeneeeteeeeeeeeeeneeseneeeees 600-0530
1G WWM ne cteooksecehicinalenk atlarn sdaatectuaniincedtainvevichd antes eensasesaauatyes 34450043
[COV IM ices ssvetec aise os acrecacestaceaneacen cag ieeunarunmunoncosueiteatacdaaauaiess 344S0062
1 TAIN assed elo Felecia te acess eine eta nents Meetunaaee ee ecoteace 343-0002
oad eV 1 10d ener ene ae mam ia ee net te Screener er terre ee ereercr eer iereee ee 630-8221

Macintosh Computers, Vol. 2 67

ROM, low, Macintosh Il FDHD upgrade .................:eeeceeeeeeeeeees 661-0642

ROM, med low, Macintosh II FDHD upgrade ................:::eee 661-0641
ROM, med high, Macintosh Il FDHD upgrade....................08 661-0640
ROM, high, Macintosh II FDHD upgrade.................ccccceeeeseeeees 661-0639
SIMM, 256K, 120 1S ...........ccccceseeseceeeeeeeeeceeeseeeseeseeeseeeseeeseeeeeens 661-0402
SIMM DIP; 256K, 1:20 1S wns vaccisoeeienceksnensaearsinaabiovaenaiereamns 661-0494
pe AY Ls) Pate "| © a 4B o> kent eon e es eee 661-0403
SIMM:. DIP: 1. MB. 120 NS cuter cael eA es: 661-0410
Logic board, Macintosh IIx (w/o RAM; replaces 661-0469) ............. 661-0529
Battery holder board (2 pack) ..............ccccccsseeeeeeeesseeseeeseessaeeeees 600-0530
SIMM, 256K, 120 NS .............cccccssseeeceseeeeeseeees PTR Cee eT ee 661-0402
SIMM, DIP; 256K, 120 NS scccncecncl el awaniceeiiaeni 661-0494
SUI MIB I 20S ectueaticiciactscratidued sirens tasetad duel ecadulvalaieings 661-0403
SIMM; DIP. MB, 120 WS iia iiawsdivnahetiericucdinuteneasvtaetendbuesctwontet 661-0410
Logic board, Macintosh Ilfx (W/O RAM).............:::esscceceeeseeeeeeeeeeaeeeees 661-0522
Battery Nolder COVEL..............ccccccsssscecsesseeecseessecseeseeecseueeesseeness 520-0344
Internal SCSI terminator DIOCK.............ccccceeeeeeseceeeeeeeeseeeaeeeeees 590-4515
literhalhS OSI TRG vorcecartstigcehecce dis alerts eestuiee apd eine edad: 590-4516
SIMM, 1 MB, SOU, 80 ns, 64-piN 00... ccc eeeeeceeeseeeeeeeenens 661-0548
Logic board, parity, Macintosh IIfx (W/o RAM) ...............:ccccceeeeeeeeeees 661-0592
Battery NOlder COVEL.............cccccccsseseeceeeseeccseeseesseeseeeseeseeeesaeeess 520-0344
SIMM, 1 MB, SOuJ, 60 ns, 64-pin, parity ........ eee ceeees 661-0549
Logic board parts
EMIS CCG crc netsh tncatcoravan cane we eee eecga en eweeeumeu ease morons 805-5070
Lithium battery (w/o leads; replaces 742-0009)................006 742-0011
On/OM DUTTON wossssencee ccaetonernerentanniasyaatasumany a lanie a teaeraametaetact 815-6237
Screws (lOGiC DOAFd MOUNTING) ............cccseeeeceeeeesssseceeeseeaeeeeees 462-4100
Mouse, ADB (replaces 661-0338) ..............ccccccceceeeeeeeeeseseeeeseeneees 661-0479
Power supply, Macintosh II/IX ............cccccessseeeeeeseeeseeeeeeseaeeesseeessnenens 661-0375
Power Supply, Macintosh IIfX 20.0... ccecccsseeseeeceeeeeeeeeceeseeseeetaeneeees 661-0542
Screw, M 3 x 6, with tWO WASNETSS...........cccccccesssseeeceeeeeeeeseceeeeeeeeeress 462-3401
Top cover and latch ASSEMDIy ............ccccccccsseesceeceeeeeeeeeeeteaaeaeereeseaaes 630-5229

Macintosh Il, IIx, and Ilfx

Specifications—Macintosh Il

Processor Motorola 68020 microprocessor; 15.6772 MHz; 32-bit internal
architecture
Coprocessor: Motorola 68881 floating-point unit (FPU)
Addressing: 32-bit registers; 32-bit address bus; 32-bit data bus

Memory RAM: 1 MB, expandable to 8 MB; 120 ns or faster SIMMs
ROM: 256K (four 512K-by-8-bit DIP devices)
PRAM: 256 bytes

Disk Storage Floppy drive: Internal 800K floppy drive; optional second internal
800K floppy drive; optional internal 1.4 MB floppy drive upgrade
Hard drive: Optional internal 40, 80, or 160 MB hard drive

I/O Interfaces | ADB: Two ADB ports; low-speed, synchronous serial interface

Serial: Two RS-232/RS-422 serial ports; 230.4 Kbaud max.; 0.92
Mbit/sec if external clock source is provided; asynchronous,
synchronous, and AppleTalk protocols supported

SCSI: 5 MB/sec transfer rate; eight devices max.; 50-pin internal
connector; DB-25 external connector

Floppy drive: Apple IWM chip; GCR modes to support 800K drives

Slot expansion: Processor-direct card slot

Output impedance of 8—600 ohms; short-circuit protected; sound-out
jack disables internal speaker when in use; four-voice, wavetable
synthesis and stereo sampling generator

Electrical Line voltage: 90-140 VAC; 170-240 VAC, automatically configured
Frequency: 48-62 Hz, single phase
Maximum power: 220 W (not including monitor power)

Physical Height: 5.51 in. (14 cm)
Width: 18.66 in. (47.4 cm)
Depth: 14.37 in. (86.5 cm)
Weight: 24-26 Ib. (10.9-11.8 kg); weight varies with configuration of
RAM, floppy drives, hard drives, and expansion cards

Macintosh Computers, Vol. 2 69

Specifications—Macintosh IIx

Processor Motorola 68030 microprocessor; 15.6772 MHz; built-in paged memory
management unit (PMMU); 256-byte instruction and data caches
Addressing: 32-bit registers; 32-bit address bus; 32-bit data bus

Memory RAM: 1 MB, expandable to 8 MB; 100 ns or faster SIMMs
ROM: 256K (four 512K-by-8-bit SOJU devices on a ROM SIMM)
PRAM: 256 bytes

Disk Storage Floppy drive: Internal 1.4 MB floppy drive; optional second internal
1.4 MB floppy drive
Hard drive: Optional internal 40, 80, or 160 MB hard drive

1/O Interfaces | ADB: Two ADB ports; low-speed, synchronous serial interface

Serial: Two RS-232/RS-422 serial ports; 230.4 Kbaud max.; 0.92
Mbit/sec if external clock source is provided; supports
asynchronous, synchronous, and AppleTalk protocols

SCSI: 5 MB/sec transfer rate; eight devices max.; 50-pin internal
connector; DB-25 external connector

External drive: Apple SWIM chip; MFM/GCR modes to support 800K
and 1.4 MB drives

Slot expansion: 120-pin processor-direct slot (PDS)

Output impedance of 8—600 ohms; short-circuit protected; disables
internal speaker when in use; four-voice, wavetable synthesis and
stereo sampling generator

Electrical Line voltage: 100-240 VAC; automatically configured
Frequency: 48-62 Hz, single phase
Maximum power: 220 W (not including monitor power)

Physical Height: 5.51 in. (14 cm)

Width: 18.66 in. (47.4 cm)

Depth: 14.37 in. (36.5 cm)

Weight: 24-26 Ib. (10.9-11.8 kg); weight varies with configuration of
RAM, floppy drives, hard drives, and expansion cards

70 Macintosh II, IIx, and IIfx

Specifications—Macintosh Ilfx

Processor Motorola 68030 microprocessor; 40 MHz; 32-bit internal architecture;
built-in paged memory management unit (PMMU); burst-mode
RAM access; 256-byte, built-in instruction and data caches

Coprocessor: Motorola 68882 floating-point unit (FPU); 40 MHz

Input/output processor chips: Two IOP chips are standard
implementations of a 2 MHz 6502; IOP chips manage the floppy
drives (SWIM chip), ADB, and serial ports (SCC chip)

SCSI/DMA controller: Standard cell implementation of 53C80 SCSI
chip and DMA logic; manages the SCSI bus

Memory RAM: 4 MB, expandable to 8 MB; 80 ns fast-page mode, 64-pin SIMMs

Static RAM cache: Built-in, zero-wait-state, 32K static RAM cache
memory architecture

Memory subsystem: Supports overlapping reads form cache/ROM
and writes to DRAM

Disk Storage Floppy drive: Internal 1.4 MB floppy drive; optional second internal
1.4 MB floppy drive
Hard drive: Optional internal 40, 80, or 160 MB hard drive

I/O Interfaces | ADB: Two ADB ports; allow daisy-chaining of ADB devices

Serial: Two RS-232/RS-422 serial ports; mini DIN-8 connectors

SCSI: 50-pin internal connector; DB-25 external connector

NuBus: Six internal NuBus slots support full 32-bit address and data
buses

Processor-direct slot: Provides high-speed, 32-bit access to the
system bus

Sound: Stereo sound jack

Custom, digital sound chip provides 8-bit stereo sampling at 44.1 KHz
and includes four-voice, wavetable synthesis—capable of driving
stereo headphones or other stereo equipment through the sound
jack

Electrical Line voltage: 100-240 VAC, automatically configured
Frequency: 48-62 Hz, single phase
Maximum power: 230 W (not including monitor power)

Physical Height: 5.5 in. (14 cm)
Width: 18.7 in. (47.4 cm)
Depth: 14.4 in. (86.5 cm)
Weight: 24 Ib. (10.9 kg) (without hard drive)

Macintosh Computers, Vol. 2 71

Symptom/Cure Chart

System Problems

Doesn't power on,
screen is black, fan is
not running, and LED
is not lit

Clicking, chirping,
or thumping sound

Computer shuts
down intermittently

System intermittently
crashes or locks up

Error chords sound
at startup
(Macintosh IIfx only)

System doesn't
boot (Macintosh Ilfx
only)

Video Problems

Partial or whole
screen is bright and
audio is present, but
no video information
is visible

Screen is
completely dark, fan
is not running, and
LED is not lit

Solutions

Check cables.

2. Plug monitor directly into wall socket and verify that monitor
has power.

3. Replace power cable.

4. Check batteries. Replace both batteries if either battery is
below 3.2 volts.

5. Replace power supply.

6. Replace logic board. Move customers SIMMs to new logic board.

1. Replace power supply.

2. Replace logic board. Move customer's SIMMs to new logic board.

1. Check that air vents on sides and top of computer are clear.
Thermal protection circuitry may shut system down. After 30
to 40 minutes, system should be OK.

2. Replace power cable.

3. Check batteries. Replace both batteries if either battery is
below 3.2 volts.

4. Replace power supply.

5. Replace logic board. Move customer’s SIMMs to new logic board.

1. Make sure system software is correct version.

2. Make sure you are using known-good software.

3. Replace SIMMs.

4. Replace logic board. Move customers SIMMs to new logic board.

5. Replace power supply.

1. Replace Apple-labeled NEC SIMMs that have a date code of
9052 or lower.

2. See Startup Problems—Flowchart 2 in the On-Site
Troubleshooting section.

— Replace Apple-labeled NEC SIMMs that have a date code of
9052 or lower.

Solutions

1. Replace monitor.

2. Replace video cable.

3. Move video card to different slot.

4. Replace video card.

5. Replace logic board. Move customer's SIMMs to new logic board.

1. Plug monitor directly into wall socket and verify that monitor
has power.

2. Check batteries. Replace both batteries if either battery is
less than 3.2 volts.

3. Replace power supply.

4. Replace logic board. Move customer’s SIMMs to new logic board.

Macintosh Il, IIx, and IIfx

Screen is black,
audio and drive
operate, fan is
running, and LED
is lit

Screen is black,
audio and drive don't
operate, but fan is
running and LED

is lit

Video display exhibits

ghosting, or system
boots and then loses
video

Ooo ee

Floppy Drive Problems

Solutions

Internal floppy drive
runs continuously

Audio and video are
present, but one
internal floppy drive
doesn't operate

Audio and video
are present, but
neither internal
drive operates

Disk ejects; icon

with blinking “X”
displays

Won't eject disk

oe a a Ne

Ooo Se ee ee

Adjust brightness on monitor.

Replace monitor.

Replace video cable.

Move video card to different slot.

Replace video card.

Replace SIMMs.

Replace logic board. Move customer's SIMMs to new logic board.
Replace power supply.

Replace video cable.

Move video card to different slot.

Replace video card.

Replace SIMMs.

Replace logic board. Move customers SIMMs to new logic board.
Replace power supply.

Replace monitor.

Replace Apple-labeled NEC SIMMs that have a date code of
9052 or lower.

Replace bad disk.

Replace internal floppy drive cable.

Replace internal floppy drive.

Replace logic board. Move customers SIMMs to new logic board.

Replace bad disk.

Verify that all external SCSI devices are disconnected.
Replace internal floppy drive cable.

Replace internal floppy drive.

Replace logic board. Move customers SIMMs to new logic board.
Replace power supply.

Replace bad disk.

Verify that all external SCSI devices are disconnected.
Replace power supply.

Replace logic board. Move customer’s SIMMs to new logic board.

Replace disk with known-good system disk.

Replace internal floppy drive cable.

Replace internal floppy drive.

Replace logic board. Move customer’s SIMMs to new logic board.

Switch power off and hold mouse button down while switching
power back on.

Eject disk manually by pushing opened paper clip into hole
beside drive slot.

Replace internal floppy drive.

Macintosh Computers, Vol. 2 73

MS-DOS drive doesn't —

recognize disk

formatted on 1.4 MB

SuperDrive

Drive attempts to
eject disk but can’t

SCSI Drive Problems

Internal hard drive
won't operate, LED
doesn't light, drive
doesn't spin

Drive doesn't
appear on desktop

Works with internal
or external SCSI
device but not

with both

Peripheral Problems

No response to any
key on keyboard

Cursor doesn''t
move

Cursor moves, but
clicking mouse
button has no effect

2.
3.

Reformat disk using MS-DOS drive.

Reinsert disk.

Reseat cover so drive slots align correctly.

Eject disk manually by pushing opened paper clip into hole
beside drive slot.

Replace internal floppy drive.

Solutions

{
2.
3.
4

3.
4

Replace SCSI signal cable.

Replace SCSI power cable.

Replace hard drive.

Replace logic board. Move customer's SIMMs to new logic board.

If computer is a Macintosh Ilfx, there may be a SCSI
termination problem. Refer to "SCSI Termination—Macintosh
llfx" to verify that computer is properly terminated.

Check SCSI device switch setting on external device. Make
sure setting isn’t 0 (internal hard drive address) or 7 (CPU
address).

If computer is a Macintosh Ilfx, there may be a SCSI
termination problem. Refer to "SCSI Termination—Macintosh
llfx" to verify that computer is properly terminated.

Replace SCSI terminator on external device.

Verify that terminator is installed on internal SCSI drive.
Troubleshoot external drive.

Solutions

2.
3.
4
A

ooh,

Check keyboard connection to ADB port.

Replace keyboard cable.

Replace keyboard.

Replace logic board. Move customers SIMMs to new logic board.

Check mouse connection.

Clean mouse.

If mouse was connected to keyboard, connect mouse to rear
ADB port. If mouse works, replace keyboard. If mouse does
not work in any ADB port, replace mouse.

Replace logic board. Move customer’s SIMMs to new logic board.

Replace mouse.
Replace logic board. Move customers SIMMs to new logic board.

Macintosh Il, IIx, and IIfx

Cannot double-click
to open application,
disk, or server

Known-good
ImageWriter or
ImageWriter II
won't print

Known-good
LaserWriter
won't print

Miscellaneous
Problems

No sound from
speaker

HMMU socket
doesn't allow
PMMU installation

System hangs when
first application is
launched, or displays
error code and locks up
(Macintosh IIfx only)

oN >

Remove any multiple system files on hard drive.

Clear parameter RAM. Reset mouse controls.

If mouse was connected to keyboard, connect it to rear ADB
port. If mouse works, replace keyboard. If mouse does not
work in any ADB port, replace mouse.

Replace logic board. Move customers SIMMs to new logic board.

Verify system software is correct version.

Verify Chooser and Control Panel settings are correct.
Replace printer interface cable.

Replace logic board. Move customer's SIMMs to new logic board.

Verify system software is correct version.
Verify Chooser and Control Panel settings are correct.
Refer to Networks manual in Service Source.

Solutions

Verify that volume setting in Control Panel is 1 or above.
Replace speaker.
Replace logic board. Move customer's SIMMs to new logic board.

Replace logic board. Verify HMMU socket on new logic board
is 13-by-13 grid array package and that it contains 132 gold
contacts inside socket. (Sockets containing 70 pins do not
support PMMUs.)

Replace Apple-labeled NEC SIMMs that have a date code of
9052 or lower.

Macintosh Computers, Vol. 2 75

Macintosh II and Ilx Memory Upgrades

The Macintosh II and IIx computers require 120 ns (or faster) SIMMs. The 150
ns SIMMs will cause serious timing problems. All SIMMs in each bank must be
the same size. Mitsubishi 1 MB SIMMs, which are labeled “For 030 Systems
Only,” should be used only in systems with 68030 microprocessors.

Macintosh Il/llx Memory Configurations

Four 256K SIMMs Empty
Four 256K SIMMs Four 256K SIMMs

Four 1 MB SIMMs Empty
Four 1 MB SIMMs Four 256K SIMMs
Four 1 MB SIMMs Four 1 MB SIMMs

NuBus SCSI Hard Drive SCSI Hard Drive Batteries
Slots Power Connector Signal Connector

On/Off
Power
Switch

Interrupt
Switch

Reset
Switch

RAM
SIMM
Sockets

Logic Board Floppy Floppy Speaker
Power Connector Drive 2 Drive 1 Connector

Figure 2 Macintosh Il and IIx Logic Board

76 Macintosh Il, IIx, and IIfx

Macintosh IIfx Memory Upgrade

The Macintosh IIfx computer requires 80 ns (or faster) SIMMs. Do not use
LaserWriter II SIMMs in the Macintosh IIfx.

aE llfx Memory Configurations

4 — Four 1 MB SIMMs Empty
Four 1 MB SIMMs Four 1 MB SIMMs

<= a=

Processor-Direct Slot SRAM Cache

Figure 3 Macintosh Ilfx Logic Board

Macintosh Computers, Vol. 2 77

Macintosh Il Upgrades

Apple SuperDrive Upgrade

System software must be version 6.0.2 or higher to use the 1.4 MB Apple
SuperDrive. If the software version is lower than 6.0, the computer will
mistake the 1.4 MB drive for an 800K drive.

1. Place the Macintosh II on the grounded workbench pad and put on your
grounding wriststrap.

2. Remove the top cover, video card (and any other cards installed), and the
drive mount.

3. Using an IC extractor, remove the four ROMs at the logic board locations
shown in Figure 4.

Med HI ROM H! ROM

LO ROM IWM/SWIM MedLO ROM HMMU/PMMU

Figure 4 Macintosh Il Logic Board

4. Using the following chart and Figure 4, install the four revised 512K
ROMs. The notch at the end of each ROM should face the front of the
logic board.

ROM P/N

HI 661-0639
MED HI 661-0640
MED LO 661-0641
LO 661-0642

5. Using the IWM/SWIM extractor, remove the IWM chip from the logic
board (see Figure 4).

Macintosh Il, IIx, and IIfx

6. Position the SWIM chip (see Figure 4) so that the beveled edge with the
white dot faces the white dot on the logic board.

7. Align the pins in the socket and gently press straight down on the SWIM
chip until it seats in the socket.

8. Install the 1.4 MB Apple SuperDrive onto the drive mount on drive 1 or
drive 2.

9. Replace the drive mount, the video card (and any other cards that you
removed), and the cover.

10. Place the 1.4 MB and 800K labels in the appropriate positions on the
front of the Macintosh II.

PMMU Upgrade

1. Remove the Macintosh II cover and drive mount.

2. Locate the HMMU chip on the logic board (see Figure 4).

3. Using a small, flat-blade screwdriver, gently pry up the sides of the chip to
remove the HMMU from the socket.

4. Position the PMMU so that the line on its surface points toward the
speaker at the lower-right corner of the logic board.

5. Align the pins in the socket and gently press the PMMU into the socket.

6. Replace the Macintosh II drive mount and top cover.

Macintosh Computers, Vol. 2 79

SCSI Termination—Macintosh Ilfx

Caution

The Macintosh IIfx computer can transfer data to and from SCSI devices much
faster than earlier Macintosh computers. This increased data transfer rate has
made it necessary to modify the termination characteristics of the SCSI interface.
Three new parts are used to implement these SCSI termination changes:

e Apple SCSI Cable Terminator II
e Internal SCSI Termination Block
e Internal SCSI Filter

Apple SCSI Cable Terminator Il

To provide proper termination, you must install a SCSI Cable Terminator II
when an external SCSI device is attached to a Macintosh IIfx. Rules for using
and installing the Terminator II are the same as those for the original SCSI
terminator. The plastic on the Terminator II is black, whereas the plastic on
the original terminator is blue.

Use only one Cable Terminator II on a SCSI daisy chain. Connecting more
than one terminator can damage the Macintosh IIfx.

Internal SCSI Termination Block

The termination block must be installed to provide internal SCSI termination
for systems without an internal SCSI hard drive. Apple installs this termination
block (and the internal SCSI filter) on all Macintosh IIfx systems shipped
without internal SCSI drives (see Figure 5).

The termination block is located on the logic board's SCSI connector. You

must remove the termination block when you add an internal SCSI drive to the
system.

Macintosh ll, IIx, and Ilfx

SCSI

Hard Drive
Signal
Connector

Figure 5 Macintosh Ilfx Without Internal SCSI Drive

Internal SCSI Filter

Internal
SCSI

Terminator
Block

Internal
SCSI
Filter

The SCSI filter must be installed to provide the proper termination capacitance

for third-party drives and for Apple internal drives shipped before 3/19/90.

When you install a SCSI drive in a Macintosh IIfx computer that shipped
without a SCSI drive, you must remove the SCSI filter from the Macintosh IIfx
logic board and install the filter on the drive.

Macintosh Computers, Vol. 2

SIMM Replacement—Macintosh Ilfx

Some Macintosh IIfx computers and 4 MB expansion memory kits have
defective DRAM chips from NEC. The defective NEC SIMMs, which have date
code 9052 or lower, should be replaced. Locate the date code as shown in
Figure 6.

Computers using these defective SIMMs can experience a variety of failures,
including:

¢ Computer does not boot.

¢ Computer hangs on first application launch.

¢ Computer boots but loses video (memory related).
¢ Computer sounds error chords.

¢ Computer display exhibits ghosting.

¢ Computer displays an ID error and locks up.

Ae et (AOA RI
NEC ARAN

A wees
MUTE PS

O
Date 8949} Y¥OGS
Code O

YUL °

Figure 6 Location of Date Code on NEC SIMMs

Macintosh Il, IIx, and IIfx

\0NDD0 000 «

,
Y

| a

= Specifications—
Macintosh IIcx

Cc Specifications—

= Macintosh Ilci
Specifications—

C Macintosh IIsi

o Symptom/Cure Chart
7 Memory Upgrades—

Memory Upgrades—
a Macintosh llci
Ney Memory Upgrades—

Macintosh IIsi

Macintosh tlcx, llci,

90
91

7)
foe)
=)

S
2

Illustrated Parts List

Top
Cover

Hard Drive
Hard Drive Power Cable
LED
Cable
Bracket
HDA

Light Pipe

Drive
Carrier

Internal
Shield

Floppy
Drive

Speaker
Bracket

Speaker
Reset/

Interrupt
Switch

Power-On
Light Pipe

Feet AC Power Cable

Figure 1 Macintosh llcx and Ilci Exploded View

84 Macintosh Ilex, llci, and IIsi

Macintosh llicx & Ilci
Bottom case parts

Cable: HDA LED (amber) sicicisccrasdivessinavnsnetesvonanasnyetieelivess 590-0506
Light PID, DOWEFONieiccasectivnetrnsadeak aeswuieiadnelAistaeesieten edad 815-6032
LIGHU DING, TAD Awe teacsactvtcutwiaveutan es ceetaenienie adusiest ea hodecseuneds: 815-6036
FUDDOR TOOL i sicceviasddon i ete yy seeesau eda aseaann ocean caeson annie: 865-0026
Cable, power, 110 VAC (SMOke) ..........:ccccccceeeeeeeeeeeeeeeseeeeeaaeeeeeeeeees 590-0380
Floppy drive, Apple SuperDrive ..................ccceeeeeeeeeneceneeeeeeeeeeeeeeeeeees 661-0474
Cable, internal SuperDrive (yellow stripe) ...............::cceeeee 590-0607
IGS aS ANGIE 354. stoecentacterere nce tadaccanwevecton doawseaaneareunisiententaecere 805-0961
Screw, SuperDrive shield/carrier to SuperDrive ................0 844-0018
HDA, 40 MB, internal 3.5" SCSI oo. ceccceeseeeseserseeeseneenseeseneeeas 661-0464
HDA, 80 MB, internal 3.5" SCSI ooo. ccccesesesseseeeesaveeeenaeenes 661-0600
HDA, 80 MB, internal 3.5" SCSI with A/UX, V.1.1 woo. 661-0561
HDA, 80 MB, internal 3.5" SCSI with A/UX, vV.2.0....... eee 661-0613
Cable, HDA power (Mac IICX) ............::::s0eseeeeeeceeeeeeeeeeeeeeeeeeeeees 590-0505
Cable, HDA power (2 X 2 Pim) .........ccccccceeeesesseseeeeeeeeeennaaaeneeeeees 590-0512
Cable, internal HDA (SCSI connector cable)........... eee 590-0609
Drive carrier, HDA, 3.5" SCSI, internal .............. eee 805-5078
DIVE IMOUIN cecssacuutzcosts conlarcoasaahcecsnutnuimnitsaxdanbhensatnaetceesyewendanees 815-6030
Screw, 6-32 x .250 (HDA to HDA bracket) ...........cceeeeeeeeeeeees 444-6104
Screw, M 3.5 x .6 x 8 HDA bracket/bottom case) ..............:06 416-1412
Lithium battery (W/O l@adS)...........:ccccssseseeeeeeeeeeeeeeceeseeeeeeeeeeeeeeneeeeeeess 742-0011
Battery: NOlder COV Cl isssac2ecieuasevetestesawananeie ae ees 520-0344
MOUS6: ADB sci arcu adalah Gahan 661-0479
OIA O fi DUTON ase sese vita Seeds sremanuiaphenederaeiaapu sence suds aianedt os naenaes 815-6033
POWErSUDDIY WIEN TAN weiescseisiecdcedwasapvaesivvetnndereeicnesinarenceisaataves 661-0467
Bracket, DOwer SUPPLY fAN ..... ee eee ceeeeeeeeeeeeeeeeneeeeeeeeeneneeaenes 815-5071
POWSr SUDDIY TaN svecikacvedicactusetviasiiendhaanebdeasteewehaaanart 982-0023
Reset/interrupt SWItCH .............cccceeecececesseeeeeeeneeseeeseeeeeseeeeeesseaseeeeesenes 815-6034
SOC AK EN or wccenerepeiscy tess he einstein saaatetecieaeeat cor ipeas acces etna eaten: 630-5503
SHEAKE! DLACKe Ti aucaenwdctincsienarGuawonhareinaemica weal 815-6031
TOP COVEN. scare tecsausasndeastetaaausesaauniniaienaxdeseatacaneiatnansuateendnncdseaaetaalarel 810-6028
SCIEW, COVEN sbi atscatetaatet eeenc need trcseeetactua ate veni utter ieenacetadeas 416-1414

Macintosh Ilcx

BOUIN CASC iasisiteis Js ciseausieiz cvs pcneccn dicanentioecoes cecaadetlad bis aig och eeaeataaieapendn chee 630-5502
Logic board (w/o RAM; replaces 661-0459) ............eeeeeceeseeeeeeeeeee es 661-0537
DIMM: 2OGK. S20 1S ses rssussenccuccoi scans uh net cedyaa stoves Cosanetacsmaaueaesk 661-0402
SIMM, DIP: 256K, 120 AS isis ci ric ats Socadcauatsauerenciaseanalenaabeasaae’ 661-0494
SIMIMESTIMB 120 11S ssc eaaetecdiee raid qeumeennaac ecu sieeeamecetenntemneanauce 661-0403
SIMM,. DIP3 4. MB 3120 NS vies oc dasi ecdansalaeunavianrapaaurcibdveaaes 661-0410

Macintosh Computers, Vol. 2 85

Macintosh lici only

BOOM) CASE oicccij ccs sconces Gioiecice ree encase sod sad saomanaseasha eed caamduasens, 630-5662
CACC IGANG eit cicinersenienasnaadepone coosened wunnieideshtladnat vay neadiaubineaparsuarennens 661-1602
LOGIC DOA ( W/O: FAM) icsccdicsdeacadimenvscideesebsabanenesnecmacesgeoiedaonmeners 661-0532
SVM 2OCK.X Ae BOS iscdecdeatiatusadesn, dheataaiagiemenmcressenntareiarnesntnn 661-0519
SIIVIM MIB BONS iia saimcgi Gedy ircnvedineenac ap daedaananesieseeaduantaceaneaes 661-0520
LOGIC DOAIG, DAILY stivussieisccandvor ee tneddniiennem davedx tome vomaaee 661-0583
SIMM, 1 MB x 9, 80 NS, Pality........ ec eeeeeeeeeeeseeeseeeeeeeaeeeeees 661-0546

Macintosh Ilsi

BOULO My COSC a sever arate satel site non tarrstanaw inviting ave ural Veliaanduauahion nduawraniedutd cas 630-5804
PMV TOOL seeatdoxchecuerBau tsi 6 gam unestsird deen unmet asad Scnediaeet baal 865-0024
PaleaSSOMDly Macstennssaudcneacncener cedsaenbsessle sth ssugane tiuewecueanvadaxcneliiae: 810-6030
Floppy drive, Apple SuperDrive ...............cccccccceeceessseeeeeeeeneeeesaeeeeneees 661-0474
Cable, internal SuperDrive...............cccceeeeeeeceecasseeeeeeesaeeseeetens 591-0025
SuperDrive Carrier/Shield ..............cccccsssccccseececccssseeesaeeeeeseeseeeens 805-0961
Screw, SuperDrive shield/carrier to SuperDrive .................00 844-0018
HDA, 40 MB, 1", internal 3.5" SCSI... eeceeeeeesseeseseeesseneesees 661-0614
HDA, 80 MB, 1", internal 3.5" SCSI oo... ccseeseeseeeeeeeeeseeneaes 661-0624
Cable, internal HDA (SCSI connector cable)................:cccee 591-0026
Cable ADA: DOW Gf is decessuc hte aloiadivceiiustaeviaaasuatasweena ents: 591-0027
a | BFA eer: | dl © | deen ema pena ete ore ena ee Deter oe eRe a ny Lene Penn ae 805-0980
Screw, 6-32 x .250 (carrier tO HDA).............cccecsseeeeeeeeeaeeeeeeeees 444-6104
LOGIC DO ANG cacarsausrasieun de eevcaudel inne niemetee eeenseseuadetay manos arsed doteadtotaaca east 661-1615
Bracket, plastic, O30 adapter Card .............ccccccssceeeceseeeeeeeeeeeeees 815-6246
NUBUS AGADIOF CAN: whvadesialea vis ctetetuateianetec aware seiedsatevcuniaheuss 661-0645
Processor direct adapter Card...........cccccccccsssseeeeeeceneeeeeeeeenaesees 661-0644
SIMM, SOU, 256K, 80 1S ........ cc ccccccccececessesseeseeeossereetseeneseneess 661-0519
SIM T2IK, BO 1S: cesses acces asain cen yustose sca geanonsamactteneaaimautans 661-0646
SIMM SO. 1 MB SOS eieset seesaw eres cestaavecseenniemeausats 661-0520
SIMIM 2 MIB; BO: MS iiiccs ae cess dawsiventedendec vets aabersaserameacerteunied 661-0643
Thumbscrew, NuBuSs adapter Card ..............cccceccceseeeeeeeeeeeeeeaees 450-0032
Microphone ASSEMDIY..........ccccccccsssssssssseeceeceseeseeeeeassseeseeneesssseeeaeasaes 699-5071
POWCI SUD DIY saiiacciacasenn con aupesit ined. cay heanataeenn aaa eeuen 661-1616
Speaker/LED ASSEMDIy .............cccscsesssssssessssssesssessssessesessseeseseeeeeeeees 810-6031
HOP COV SF steer nusnceiessisatparaslataatatsteita sa races dneunausanedu en tnlen td oastectonieedtiess ve, 810-6034
LIGHT DIDS: DOWET-OM scivaiaiacusanemias voice nenceeeeguasiioas yuaombendutceogdaeoroeaulons 815-6247

Macintosh Ilex, llci, and IIs

Fan

Assembly Power

Supply

Adaptor
Card &
Bracket

Logic
Board

Internal
Floppy
Drive
Cable

Floppy
Drive

Carrier

Floppy
Hard Drive
Drive
Data

wale 844-0018

Hard
Drive
Power
Cable

Bottom
Case

865-0024
Hard
Drive

Carrier Speaker/

LED

Assembly

Figure 2 Macintosh lisi Exploded View

Macintosh Computers, Vol. 2

Specifications—Macintosh Ilcx

Processor

Motorola 68030 microprocessor; 15.6672 MHz; 32-bit internal data
bus; 256-byte instruction and data caches; built-in paged memory
management unit (PMMU)

Coprocessor: Motorola 68882 floating-point unit (FPU); accepts
optional coprocessor cards installed in NuBus expansion slots

Memory

ROM: 256K
Disk Storage Floppy drive: Internal 1.4 MB floppy drive

RAM: 1 MB, expandable to 8 MB (120 ns or faster SIMMs)

Hard drive: Optional internal 40 or 80 MB hard drive

I/O Interfaces

ADB: Two ADB ports allow daisy-chaining of multiple peripheral
devices

Serial: Two RS-232/RS-422 serial ports; mini DIN-8 connectors

Hard drive: DB-25 connector

Floppy drive: One DB-19 serial port for connecting external floppy
drives

NuBus: Three internal slots support full 32-bit address and data buses

Sound: Sound jack

: Sound generator: Custom digital sound chip provides 8-bit stereo
sampling at 44.1 KHz; four-voice, wavetable synthesis—capable of
driving stereo headphones or other stereo equipment through the
sound jack

Electrical

Line voltage: 100-240 VAC, automatically configured
Frequency: 50-60 Hz
Maximum power: 90 W (not including monitor power)

Physical

Height: 5.5 in. (14 cm)

Width: 11.9 in. (30.2 cm)

Depth: 14.4 in. (36.5 cm)

Weight: 14 Ib. (6.4 kg) with hard drive

Macintosh IIcx, Ilci, and Ilsi

Specifications—Macintosh llci

Processor Motorola 68030 microprocessor; 25 MHz; 32-bit internal data bus;
burst mode RAM access; 256-byte instruction and data caches
Coprocessor: Motorola 68882 floating-point unit (FPU)

RAM: 1 MB, expandable to 8 MB; 80 ns or faster SIMMs

ROM: 256K

Cache connector: 120-pin memory cache connector

Parity support: Optional parity-generating chip and parity RAM
convert the system to a parity system

Disk Storage Floppy drive: 1.4 MB floppy drive
Hard drive: Optional internal hard drive (many capacities)

/O Interfaces | ADB: Two ADB ports allow daisy-chaining of multiple peripheral
devices

Serial: Two RS-232/RS-422 serial ports; mini DIN-8 connectors

Floppy drive: One DB-19 serial port for connecting external floppy
drives

SCSI: 50-pin internal connector; DB-25 external connector

NuBus: Three internal NuBus slots support full 32-bit address and
data buses

Video: One DB-15 video port for built-in video

Sound: Stereo sound jack

Sound and Sound generator: Custom digital sound chip provides 8-bit stereo

Video sampling at 44.1 KHz; four-voice, wavetable synthesis—capable
of driving stereo headphones or other stereo equipment through
the sound jack

Video: Supports 640 by 480 pixel screens at up to 256 colors or
shades of gray (up to 8 bits per pixel); supports 640 by 870 pixel
screens at up to 16 shades of gray

Electrical Line voltage: 100—240 VAC, automatically configured
Frequency: 50-60 Hz
Maximum power: 90 W (not including monitor power)

Physical Height: 55 in. (14 cm)

Width: 11.9 in. (30.2 cm)

Depth: 14.4 in. (36.5 cm)

Weight: 14 lb. (6.4 kg) with internal hard drive

Macintosh Computers, Vol. 2 89

Specifications—Macintosh Ilsi

Processor Motorola 68030 microprocessor; 20 MHz; 32-bit internal data bus;
256-byte instruction and data caches; burst-mode RAM access;
built-in memory management unit (MMU)

Coprocessor (on optional adapter card): Motorola 68882 floating-
point unit (FPU)

RAM: 2 MB, expandable to 17 MB
ROM: 512K
PRAM: 256 bytes

Disk Storage Floppy drive: Internal 1.4 MB floppy drive
Hard drive: Internal 40 MB hard drive; optional internal 80 MB hard
drive

I/O Interfaces | Serial: Two RS-232/RS-422/AppleTalk serial ports; mini DIN-8
connectors

SCSI: One external SCSI port; DB-25 connector

Slot expansion: One slot for either a NuBus or an 030 direct slot
card; 15 W max. power available (+5 V, 2A; +12 V, 0.175 A;
-12 V, 0.15 A)

I/O Devices Keyboard: Apple Keyboard, Apple Keyboard II, or Apple Extended
Keyboard connected through ADB ports; mini DIN-4 connectors
Mouse: ADB mouse; mini DIN-4 connector

Output impedance of 8-600 ohms; short-circuit protected; sound-out
jack disables internal speaker; four-voice, wavetable synthesis
and stereo sampling generator

Electrical Line voltage: 100-240 VAC, automatically configured
Frequency: 50-60 Hz, single phase
Maximum power: 100 W (not including monitor)

Physical Height: 4 in. (10 cm)

Width: 12.4 in. (31 cm)

Depth: 14.9 in. (37.2 cm)

Weight: 10 lb. (4.5 kg); weight varies with configuration of RAM,
floppy drives, hard drives, and expansion cards

90 Macintosh licx, llci, and Ilsi

Symptom/Cure Chart

System Problems

Does not power on—
screen is black, fan is
not running, and LED
is not lit

System intermittently
crashes or locks up

Clicking, chirping, or
thumping sound

System shuts down
intermittently

System intermittently
won't power on

System seems to
boot, then message
“Finder is old version”
displays

System restarts itself

(Macintosh lici and IIsi)

Solutions

esl

Check cables.

Plug monitor directly into wall socket, and verify that monitor
has power.

Replace power cable.

Check batteries. Voltage should be above 2.8.

Replace power supply.

Replace logic board. Move customers SIMMs to new logic board.

Make sure system software is correct version.

Make sure you have known-good software.

Replace logic board. Move customer's SIMMs to new logic board.
Replace SIMMs.

Replace power supply.

If system has Macintosh Ilci Cache Card with a serial number
beginning with “CF,” remove and return card to Apple. See
Apple Service Programs manual in Service Source.

Replace power supply.
Disconnect hard drive. Replace drive if noise disappears.
Replace logic board. Move customers SIMMs to new logic board.

Make sure air vents on back side and top of case are not
obstructed. Thermal protection circuitry may shut down
system. After 30 to 40 minutes, system should be OK.
Replace power cable.

Replace power supply.

Replace logic board. Move customer's SIMMs to new logic board.

Check cables.

Plug monitor directly into wall socket and verify that monitor
has power.

Try known-good keyboard and ADB cable.

Replace power cable.

Check batteries. Voltage should be above 2.8.

Unplug power cord from system for 5-10 minutes. Replace
power cord and switch on system. If system starts normally,
replace power supply.

Replace logic board. Move customer's SIMMs to new logic board.

Clear parameter RAM. Hold down <Command> <Option>
 <R> keys and reboot system. You will hear normal
startup chords and about two seconds later you will hear
another chord. This means parameter RAM has been
cleared.

Replace logic board. Move customer’s SIMMs to new logic board.

Set the locking power switch on the rear of the computer to
the unlocked (horizontal) position.

Macintosh Computers, Vol. 2 91

Video Problems

Screen is dark,
no audio, but fan is
running and LED is lit

Screen is dark,
audio and drive
operate, fan is
running, and LED
is lit

Partial or whole
screen is bright and
audio is present, but
no video information
is visible

Screen is completely
dark, fan is not
running, and LED

is not lit

Black and white
video only

SCSI Problems

Internal hard drive
won't operate

Solutions

Oo OS eS NS

Oe SOO ONS

a ORIG Wa

Ong ON

—+— ©

Replace video cable.

Replace monitor.

Move video card to a different slot.

Replace video card.

Remove NuBus cards.

Remove external peripherals.

Replace RAM SIMMs.

If computer is a Macintosh Ilsi with a ROM SIMM, replace
ROM SIMM.

Replace logic board. Move customers SIMMs to new logic board.

. Replace power supply.

Adjust brightness on monitor.

Replace monitor.

Replace video cable.

Move video card to a different slot.

Replace video card.

Replace RAM SIMMs.

If computer is a Macintosh Ilsi with a ROM SIMM, replace
ROM SIMM.

Replace logic board. Move customer's SIMMs to new logic board.
Replace power supply.

Replace video cable.

Replace monitor.

Move video card to a different slot.

Replace video card.

Make sure ROM jumper is on logic board.

Replace logic board. Move customer's SIMMs to new logic board.

Plug monitor directly into wall socket and verify that monitor
has power.

Remove NuBus cards.

Remove peripheral devices.

Replace power supply.

Replace logic board. Move customer's SIMMs to new logic board.

Change monitor CDEV in Control Panel for additional shades
of gray or color. Note: Macintosh IIci and Ilsi computers with
1 MB of RAM default to black-and-white video. You can allocate
additional memory to video on computers with 1 MB RAM, but
this allocation leaves little free RAM for other applications.

Solutions

1
2.
3
4

Replace SCSI cable connector.

Replace SCSI power connector.

Replace hard drive.

Replace logic board. Move customer’s SIMMs to new logic board.

Macintosh Ilex, Ilci, and Ilsi

Works with internal
or external SCSI
device but not both

Floppy Drive
Problems

Audio and video are
present, but internal
floppy drive doesn't
operate

Disk ejects; display
shows icon with
blinking “X”

Drive won't eject
disk

Drive attempts
to eject disk
but can't

Internal drive runs
continuously

Peripheral Problems

No response to any
key on the keyboard

Cursor doesn't
move

nae ee

Check that SCSI device switch setting on external device is
unique.

Replace terminator on external device.

Verify that terminator is installed on internal SCSI drive.
Replace SCSI device select cable.

Solutions

OPE) see

Replace bad disk.

Verify that all external SCSI devices are disconnected.
Replace floppy drive cable.

Replace floppy drive.

Replace logic board. Move customer’s SIMMs to new logic board.
Replace power supply.

Replace disk with known-good system disk.

Replace floppy drive cable.

Replace floppy drive.

Replace logic board. Move customers SIMMs to new logic board.

Switch power off and hold mouse button down while switching
power back on.

Eject disk manually by pushing opened paper clip into hole
beside drive slot.

Replace drive.

Push disk completely in.

Eject disk manually by pushing opened paper clip into hole
beside drive slot.

Replace drive.

Replace bad disk.

Replace floppy drive cable.

Replace floppy drive.

Replace logic board. Move customers SIMMs to new logic board.

Solutions

Check keyboard connection to ADB port.

Replace keyboard cable.

Replace keyboard.

Replace logic board. Move customer's SIMMs to new logic board.

Reboot computer.

Check mouse connection.

lf mouse was connected to keyboard, connect mouse to rear
ADB port. If mouse works, replace keyboard. If mouse does
not work in any ADB port, replace mouse.

Replace logic board. Move customer's SIMMs to new logic board.

Macintosh Computers, Vol. 2 93

Cursor moves, but
clicking the mouse
button has no effect

Cannot double-click

to open an application,

disk, or server

Known-good
ImageWriter or
ImageWriter II
won't print

Known-good
LaserWriter
won't print

Miscellaneous
Problems

No sound from
speaker

Clock not running

MacTest and
AppleCAT crash on
Macintosh IIci

SONS

Replace mouse.
Replace logic board. Move customers SIMMs to new logic board.

Remove any extra system files from hard drive.

Clear parameter RAM. Hold down <Shift> <Option>
<Command> keys and select Control Panel from Apple
menu. Reset mouse controls.

If mouse was connected to keyboard, connect mouse to rear
ADB port. If mouse works, replace keyboard. If mouse does
not work in any ADB port, replace mouse.

Replace logic board. Move customer's SIMMs to new logic board.

Make sure system software is correct version.

Make sure Chooser and control panel settings are correct.
Check DIP switch settings.

Replace printer interface cable.

Replace logic board. Move customer’s SIMMs to new logic board.

Make sure system software is correct version.
Make sure Chooser and Control Panel are set correctly.
Refer to Networks manual in Service Source.

Solutions

2:
3.

Verify that volume setting in the Control Panel is set to 1 or
above.

Replace speaker.

Replace logic board. Move customers SIMMs to new logic board.

Replace battery.
Replace logic board. Move customer's SIMMs to new logic board.

Remove the Macintosh IIci Cache Card and rerun the
diagnostic.

Macintosh Ilex, Ilci, and Ilsi

Memory Upgrades—Macintosh Ilcx

The Macintosh IIcx computer requires 120 ns (or faster) SIMMs. The 150 ns
SIMMs will cause serious timing problems. All SIMMs in each bank must be
the same size.

Macintosh lIlcx Memory Configurations

Total RAM

Four 256K SIMMs

Four 256K SIMMs Four 256K SIMMs

Four 1 MB SIMMs Empty

Four 1 MB SIMMs Four 256K SIMMs

te
Four 1 MB SIMMs Four 1 MB SIMMs

On/Off
Switch

ROM SIMM
Connector

Supply

Connector
NuBus

Connectors

Hard Drive
Connector

Hard Drive
Power
Connectors

Floppy
Drive
Connector

Reset Interrupt Speaker RAM SIMM Battery
Switch Switch Connector Connectors

Figure 3 Macintosh licx Logic Board

Macintosh Computers, Vol. 2 95

Memory Upgrades—Macintosh llici

The Macintosh IIci computer requires 80 ns fast page mode SIMMs. Slower
SIMMs will cause serious timing problems. All SIMMs in a bank must be the
same size. SIMMs must be installed in bank A if the computer uses built-in
video mode. To upgrade a parity system, you must use 80 ns, 1 MB x 9-bit
parity SIMMs or the parity function will be disabled.

Total RAM

Memory Configurations

Four 256K SIMMs
Empty

Empty
Four 256K SIMMs

Four 256K SIMMs

Four 1 MB SIMMs
Empty

Empty
Four 1 MB SIMMs

Four 1 MB SIMMs
Four 256K SIMMs

Four 256K SIMMs
Four 1 MB SIMMs

8 MB

Four 1 MB SIMMs

4 MB Parity

Four 1 MB parity SIMMs

Empty

Empty
Four 1 MB SIMMs

8 MB Parity

Cache Card
Connector

Four 1 MB SIMMs

On/Off
Switch

NuBus
Connectors

ROM SIMM
Connector

Reset Interrupt
Switch Switch

ROM
Jumper

Power

Supply
Connector

Hard Drive
Connector

Speaker RAM SIMM
Connector Connectors

Hard Drive
Power
Connector

Floppy
Drive

Connector

Battery

Figure 4 Macintosh lici Logic Board

Macintosh Ilex, Ilci, and Ilsi

Memory Upgrades—Macintosh Ilsi

The Macintosh IIsi computer requires 100 ns (or faster) SIMMs. Slower SIMMs

(120 ns, for example) will cause serious timing problems. All SIMMs must be
the same size.

Macintosh lIlsi Memory Configurations

Total RAM Bank A Bank B

1 MB RAM (soldered) Empty

1 MB RAM (soldered) Four 256K SIMMs

1 MB RAM (soldered) Four 1 MB SIMMs

ASG

ROM 68030 ROM ROM Bank A
SIMM Microprocessor Jumper RAM
Socket

Figure 5 Macintosh Ilsi Logic Board

Macintosh Computers, Vol. 2 97

090

)

a
&

000

¢
%

000000000

»e0ae00080

Macintosh Ilvx, ivi,
and Performa 600

Illustrated Parts List
Specifications
Symptom/Cure Chart
Memory Upgrades

100
103
104
108

Go
mS)
a)
=
ro)
a.
a |
je)
rep)
>)
ro)

Illustrated Parts List

Top
Cover

Hard Drive

Power
Supply

Hard Drive

Floppy Power Cable

Drive
Cable

Internal
Chassis

(=p)
(ep)
Oo
‘<0
al
7 Oo
<

ey
== (ab)
fais
foe)

Bottom
Case

WARQRGERA

Figure 1 Macintosh Ilvx, Ilvi, and Performa 600 Exploded View

100 Macintosh Ilvx, livi, and Performa 600

Battery. TIKI ssceiocacaes edie corecteeusbaerennnmuarmeeeonsargaveuceunseaxioieer env 742-0011
Battery Nolder COVEN iccccissewechdieveacheeawecnern eens: 520-0344
BOUOMT CAS Cec ten nits maaicenteninamlatreareoulnen ete 922-0057
Bottom:.case: EMI Clit wicca cciveaiatiacieiuantac ante wheter 922-0101
FROG cs wcshesaacieaitunvatednelintad dvens cuneaanetaanseaaioeenas eee 865-0024
PES CaO eee ie se aica i Mearns sagt cecaeenvaneattercaualienes ueeuen teed 810-6035
PCB: SNap-I NOOK sivissisesdcccetacetvecateventnicai ied hiteecndwaduonideiiiees 922-0097
Cable, AC power (SMOKE)........c::cccsccccccccceceeecesseeeeeseeeensneeeeeeseneeseeeees 590-0380
Cables, internal
Cable “GD Gul O: ciride eth est ehicdas onciact eh boiaetaaemdaepanOiedeaneataes 922-0052
Cable; TOD DV GHG tcossivateaticereacss wreeeer avec me ereteuteedantewaaes 922-0112
Cable, HDA/CD-ROM Powe? .............:cccccccceneeseseeeeeeeeeeeeeeneaeeees 922-0051
CADDIE SCSI Cala chicos ctierecinctacdussnasth etnddetaarsstenba ca egustossacuctaere 922-0053
CD-ROM drive, Apple CD-300..................ccccceececeeeeeeeeeeeeeeeeeeeeeeeneeees 661-1646
CD-ROM GnVe Tail Siiccmcudicisauoedirenaapaamieneri meine deus iawat 922-0067
CD-ROMPEMI CID sacrdccchceccteveenec io aiciaece sccigeacdacsissiateinuunlade 922-0115
Screws,CD-ROM railS...............cccccecsecssecccececeeeceeeecseusesuecsareansens 416-1305
CES SIS ies tictecsl pene ctaaee te dai pacnec tec an uaileane tac ne tent iak batlaislateddati. 922-0058
COVEN ea aiece cece owas seeecter aco eee eens eed eee seas eaatemr nants 922-0056
BO ZEl OL AIA seccslsstencevsel cere niin peavecealeted deten abe abnedetenateuten ds eva tee es 922-0060
BEZEle SION sxcc.ccoeszsansnschaeceerecoavaraianitiatnnterasesaee nantes: 922-0061
PIOnt Panel MOlICG sesdencecesch orc tactestensteneice sad sscabaresanserecstavie ss 922-0059
Name plate, Macintosh IIVX ...........cccccccsssssseceeeeeseseeseseesseeseeeees 922-0063
Name plate, Macintosh IIVi ........ cc ceceeceeceeceeeeesaseeeeseseeeeseeeenes 922-0065
Name plate, Performa G00.............cccscececeeeeeeeeeeeeeaeeeeeseeeeeeeeeeees 922-0064
Screw, front panel (3.5 X 1.57 X 7) ..eeeeccccccccstsststeeseeeeeeeeeeseeeneees 922-0117
Screw, front panel (3.5 xX 1.47 X 30)... ccesesseeteeeeeteeeneeenes 922-0118
Floppy drive, Apple SuperDrive ..............cccccccccsccccccenenseessssneensssnseens 661-0474
FIODDYClIVG CARON: xtilsisisiowin ts senate veut eieeardremenaineaans 805-5050
Screw, SuperDrive tO Carries ...........cccccseeeecccecesssseceeeeasseseeeeteees 460-3400
FIARC GIVE CAG tesnsiciriteda eaten rteeauaaseaveoeucais eave nant decooete ens 922-0066
HDA, 80 MB, 1" high, internal 3.5" SCSI (IIlvx/IIvi)...................00eeeee 661-0624
HDA, 160 MB, internal 3.5" SCSI (Performa 600 only)................06 661-1647
HDA, 230 MB, internal 3.5" SCSI (lIVX/IIVi) .............ceeeeeeeeeeeeeeeeeeeeeees 661-1637
HDA, 400 MB, internal 3.5" SCSI (lIVX/IIVi) ...........:.::eseeseesseeeeeeeeeeees 661-1636
Key DOaI, ADOC a ccccansduanconacseceies xonsotarcnctitundveletestresusbsiedtnaniaudases 661-0383
LAGI IDSs OW ST. Ol cs oes 5 caine lohieeentegaelw hess veaseadulntentelagemntcraunants 815-6272
Logic board, Macintosh IIVX ............cccccseeeeceeeeeseeeeeeeeesaeeeeeeeseseeeeseeeees 661-0759
DCOW: IOGIC DO AIG tei isieines iastetasarencsaneein em nee 922-0119
Logic board, Macintosh IIVi...... ee ceesccssssssssssssssssssessssssesssseesees 661-0760
Logic board, Performa 600 ................cccceceeceneeeeeesseeeeeeeeeeenenseeaseseseees 661-0761
Microphone ASSEMDIY ..........ccccccccseseeseseeeeeeeeeseaaeaeeeeeeseeeeesessueeaesesesees 669-5103
NWIOUSG AD Bio a iegceccaestegiecte airs lata cennecenceun cee enter remmm ban iwenians 661-0479

Macintosh Computers, Vol. 2 101

102

Power Supply WIth fAN1.............cccccccssseseeeeeeaeeeseeeeeseueesseeeeseaaaseeeesesaeees 661-0758

SCrew, POWEF SUDDIY siieeeiess sce lected aeccesseivense cies eecudsetiecae ee 922-0116
Reset/interrupt SWIth .............ccccccssssssecceecceessereeeeeaauseeeeeeseesseseseseaees 815-6270
COW crests shee at ak wg ieee teu Pee carta 922-0120
SIMMs

DRAM SIMM, 1 MB, 80 1S.................ccccccceeseeeceeeeseeeeeeeeceeeeeeaaes 661-0520

VRAM SIMM, 256K, 100 nS...............cceeeeeeeeeeeeeeeeeeeeeaeeeneeteeeeeees 661-0609

VRAM SIMM, 512K, 100 1S......... cc ccescecseeceeeeeeeeeeseaeeeeeeeeeeeeees 661-0649
SAG i tales tarartie aaseaussse sia eeutacocditnas niautantinas caolnesan sana sent seaoue 922-0055

Macintosh livx, Ilvi, and Performa 600

Specifications

Processor Motorola 68030; built-in memory management unit (MMU); 32-MHz
(Macintosh Ilvx, Performa 600); 16 MHz (Macintosh IlIvi)
Coprocessor (Macintosh IIvx only): Motorola 68882 floating-point unit
(FPU); 32 MHz
Cache (Macintosh Ilvx only): 32K RAM cache soldered on logic board
Addressing: 32-bit internal registers, address bus, and data bus

RAM: 4, 5, or 8 MB, expandable to 68 MB
ROM: 1 MB
PRAM: 256 bytes
VRAM: 512K, upgradeable to 1 MB
512K VRAM supports the following video modes:
512 by 384 pixel screens with 2, 4, 8, and 16 bits/pixel
640 by 480 pixel screens with 2, 4, and 8 bits/pixel
1 MB VRAM supports the following video modes:
512 by 384 pixel screens with 2, 4, 8, and 16 bits/pixel
640 by 480 pixel screens with 2, 4, 8, and 16 bits/pixel

Disk Storage Floppy drive: 1.4 MB Apple SuperDrive
Hard drive: 80-400 MB
CD-ROM drive: Optional CD-ROM 300

/O Interfaces | ADB: Two ADB ports
Serial: Two RS-232/RS-422 ports
SCSI: 50-pin internal connector; DB-25 external connector
NuBus: Three NuBus internal slots supporting full 32-bit address and
data buses
One accelerator slot
Sound: One sound output (stereo for CDs)
Video: DB-15 video port for built-in video

I/O Devices Keyboard: Standard or extended keyboard; mini DIN-4 (ADB)
connector; draws 25-80 mA

Mouse: ADB mouse; draws up to 80 mA

Microphone: Electret omnidirectional microphone; 4 mV peak-to-peak
output voltage at normal speaking

Maximum power draw for all ADB devices: 500 mA

Sound and Sound: Custom digital Apple sound chip (ASC)

Video Video: Supports Macintosh 12" Monochrome Display, Macintosh 12"
RGB Display, AppleColor High-Resolution RGB, and Macintosh
Color Display; NuBus video cards allow computer to support other
non-Apple VGA, NTSC, and PAL monitors

Electrical Line voltage: 100-240 VAC, automatically configured
Frequency: 50-60 Hz
112 W, maximum power, not including monitor power

Macintosh Computers, Vol. 2 103

Symptom/Cure Chart

System Problems

One-tone error chord
sounds during
startup sequence

Two-tone error chord
sounds during
startup sequence

Doesn't power on—
screen is black, fan is
not running, and LED
is not lit

System intermittently
crashes or locks up

Clicking, chirping, or
thumping sound

System shuts down
intermittently

System intermittently
doesn't power on

104

Solutions

O? Ol

Disconnect SCSI hard drive power and data cable and restart
computer. If startup sequence is normal, run Macintosh Hard
Disk Test and replace hard drive if necessary.

Disconnect floppy drive cable and restart computer. If startup
sequence is normal, replace floppy drive.

Replace logic board. Move customer's SIMMs to new logic board.

Replace DRAM SIMMs.
Replace logic board. Move customer’s SIMMs to new logic board.
Perform SIMM verification on replacement logic board.

Check cables.

Plug monitor directly into wall socket. Verify that monitor has
power.

Replace power cable.

Check batteries. Voltage should be above 2.8.

Replace power supply.

Replace logic board. Move customer's SIMMs to new logic board.

Make sure system software is correct version.

Maké sure you are using known-good software.

Replace SIMMs.

Replace power supply.

Replace logic board. Move customer's SIMMs to new logic board.

Replace power supply.
Disconnect hard drive. Replace drive if noise disappears.
Replace logic board. Move customer's SIMMs to new logic board.

Make sure air vents on back side and top of main unit are not
obstructed. Thermal protection circuitry may shut down
computer. After 30 to 40 minutes, computer should be OK.
Replace power cable.

Replace power supply.

Replace logic board. Move customer's SIMMs to new logic board.

Check cables.

Plug monitor directly to wall socket and verify that monitor has
power.

Swap keyboard and ADB cable.

Replace power cable.

Check batteries. Voltage should be above 2.8.

Unplug power cable from system for 5 to 10 minutes. Replace
power cable and switch on computer. If computer starts
normally, replace power supply. .
Replace logic board. Move customer’s SIMMs to new logic board.

Macintosh Ilvx, Ilvi, and Performa 600

System seems to
boot, then message

“Finder is old version”

displays

Won't start up
without a monitor
attached

Video Problems

Screen is dark, audio
and at least one
drive operate, fan is

running, and LED is lit

Screen is dark, audio
and drive don't

operate, fan is running,

and LED is lit

Partial or whole
screen is bright and
audio is present, but
no video information
is visible

Screen is completely
dark, fan is not
running, and LED

is not lit

Hard Drive
Problems

Internal hard drive
runs continuously

Internal hard drive
doesn't operate

Macintosh Computers, Vol. 2

Clear parameter RAM. Hold down <Shift> <Option>

<R> keys during startup but before "Welcome to Macintosh"
message appears.

Replace logic board. Move customer's SIMMs to new logic board.

Verify Chooser and control panel settings are correct.

Solutions

aS oN

2. Ns

i. I

at Nae

Adjust brightness on monitor.

Replace video cable.

Replace monitor.

Replace VRAM SIMMs.

Replace logic board. Move customer's SIMMs to new logic board.

Remove peripherals.

Remove NuBus cards.

Replace DRAM SIMMs.

Replace VRAM SIMMs.

Replace power supply.

Replace logic board. Move customer’s SIMMs to new logic board.

Replace video cable.

Replace monitor.

Replace VRAM SIMMs.

Replace logic board. Move customer's SIMMs to new logic board.

Verify that external power cables are properly connected.
Remove peripherals.

Remove NuBus cards and switch on power. (Combined
NuBus cards should not draw more than 45 W.)

Remove accelerator card.

Replace power supply.

Replace logic board. Move customers SIMMs to new logic board.

Solutions

Replace SCSI data cable.
Replace hard drive.
Replace logic board. Move customer’s SIMMs to new logic board.

Replace SCSI data cable.

Replace SCSI power cable.

Replace hard drive.

Replace logic board. Move customer's SIMMs to new logic board.

105

Apple SuperDrive
Problems

Audio and video are
present, but internal
floppy drive doesn't
operate

Floppy disk ejects;
display shows icon
with blinking “X”

Floppy drive won't
eject disk

Floppy drive
attempts to eject
disk, but can't

CD-ROM Drive
Problems

CD-ROM drive
doesn't accept a
compact disc

Macintosh doesn't
display CD-ROM
drive icon

Peripheral Problems

Computer works with
internal or external
SCSI device, but not
with both

No response to any
key on the keyboard

106

Solutions

Replace internal floppy drive cable.
Replace internal floppy drive.
Replace logic board. Move customer's SIMMs to new logic board.

Replace disk with known-good system disk.

Replace internal floppy drive cable.

Replace internal floppy drive.

Replace logic board. Move customers SIMMs to new logic board.

Switch off computer and hold mouse button down while
switching computer on.

Eject disk manually.

Replace floppy drive cable.

Replace floppy drive.

Push floppy disk completely in.
Eject floppy disk manually.
Replace floppy drive.

Solutions

1.
2:

ae ca ae

Exchange disc.
Replace CD-ROM drive.

Verify that CD-ROM extension is in System Folder.
Replace SCS! data cable.

Replace CD-ROM drive.

Replace power supply.

Solutions

1.
2.

3.
4.

ace Laie

Verify that all SCSI select switch settings are unique.
Verify that hard drive is terminated but optional CD-ROM is
not terminated.

Replace terminator on external SCSI device.

Replace SCSI select cable on external SCSI device.

Check keyboard connection to ADB port.

Replace keyboard cable.

Replace keyboard.

Replace logic board. Move customers SIMMs to new logic board.

Macintosh llvx, Ilvi, and Performa 600

Cursor doesn't
move

Cursor moves, but
clicking mouse
button has no effect

Cannot double-click to
open an application,
disk, or server

Known-good serial
printer won't print

Known-good printer
on Apple Talk network
doesn't print

Miscellaneous
Problems

No sound from
speaker

Clock doesn't run

Reboot computer.

2. Check mouse connection.

3. If mouse was connected to keyboard, connect mouse to rear
ADB port. If mouse works, replace keyboard. If mouse does
not work in any ADB port, replace mouse.

4. Replace logic board. Move customers SIMMs to new logic board.

1. Replace mouse.

2. Replace logic board. Move customers SIMMs to new logic board.

1. Remove extra system files from hard drive.

2. Clear parameter RAM. Hold down <Shift> <Option> 
<R> keys during startup but before "Welcome to Macintosh"
message appears.

3. If mouse was connected to keyboard, connect mouse to rear
ADB port. If mouse works, replace keyboard. If mouse does
not work in any ADB port, replace mouse.

4. Replace logic board. Move customers SIMMs to new logic board.

1. Make sure system software is correct version.

2. Make sure Chooser settings are correct.

3. Replace printer interface cable.

4. Replace logic board. Move customers SIMMs to new logic board.

1. Make sure system software is correct version.

2. Make sure Chooser settings are correct.

3. Refer to Networking and Communications Service Guide.

Solutions

1. Check speaker volume setting in the Sound control panel.

2. Replace speaker.

3. Replace logic board. Move customer’s SIMMs to new logic board.

1. Replace battery.

2. Replace logic board. Move customers SIMMs to new logic board.

Macintosh Computers, Vol. 2 107

Memory Upgrades

The Macintosh IIvx, IIvi, and Performa 600 computers require 80 ns fast page
mode SIMMs. Slower SIMMs will cause serious timing problems. All four
SIMM sockets must be filled and all SIMMs must be the same capacity and
speed. You can use 256K, 1 MB, 2 MB, 4 MB, or 16 MB SIMMs. The list below
shows the memory configurations for Macintosh IIvx, IIvi, and Performa 600
computers.

Macintosh Ilvx/Ilvi/Performa 600 Memory Configurations

Total RAM Soldered RAM SIMMS

Empty

Four 256K SIMMs
Four 1 MB SIMMs
Four 2 MB SIMMs
Four 4 MB SIMMs
Four 16 MB SIMMs

RAM SIMM
Connectors

Figure 2 Macintosh Ilvx/llvi/Performa 600 Logic Board

108 Macintosh Ilvx, Ilvi, and Performa 600

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Macintosh Quadra
Computers

Macintosh Quadra 700 111
Macintosh Quadra 900
and 950 121

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Symptom/Cure Chart 115 ~
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Hard Drive
LED Cable

‘Internal ane ‘446-1412 aN
-- Shield .

CF DS

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Drive Mount

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844-0081" Be ee pee e Supply

Floppy =e _ ZA S Rai a :
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‘ | A a a | , : > Power-On
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Hard Drive = Ops Gi | ee oes

+ Speaker —_Light Pipe

* : 7 - 7 . . Yow =
: } * -
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Figure 1 Macintosh Quadra 700 Exploded View

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Macintosh Quadra 700

BOUONT CAS 6 saiieseectetcnteuctacre tise testaeercnt eu oieceute ast nove, aoe ues: 630-5992

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OO) OT FDU ON Essense tenanicen nino rousrarianesichct sane ws tage teed ede dedtaaainietanncanes 815-6033
Rubber feet, DOttOM ......... 0. cecceceecceccecceccecceeceeceeeeseeecesceseuseneeeeeeees 865-0026
RUBDDEr 100, SIMO iarcinstuctineans ited cetsen atta ree wetaees 865-0800
Cable, AC power, 110 V (Smoke) .................ccccsseeeeeeeeeeeeeeeeeeeseneenenes 590-0380
Carrier, HDA, internal 3.5", SCSI ......... cc ecesecseserecesensssescsesenensenenes 805-5078
COVER NOD yi evariesteete te teddies tiaseoeneaxtlelaayaiarenmamenee en 810-6038
FING ITO UI vectored en end Aas ue cat saat tigeiteenae auawldeeans tecerneeateael 810-6040
Floppy drive, 1.4 MB, Apple SuperDrive (internal) .................::c0008 661-0474
Cable, internal floppy drive (yellow stripe) .............. eee 590-0607
Screw, socket, Phillips (1.4 MB mechanism) .............ccccccccssseeeees 844-0018
Service packaging, 800K/Apple SuperDrive ...............:::cceeeeeeees 602-0210
Shield, internal (1.4 MB mechanism) ............:ccccccccccceseeeseeeeeeeeeees 805-0961
HDA, internal 3.5" SCSI, 80 MB ............ccccssssssseesesseeeeeeseseeeseeeseeeeeees 661-0600
HDA, internal 3.5" SCSI, 160 MB .............::cccceccseseceeeeeeeeeeeeeeeeeeeeeeees 661-1641
HDA, internal 3.5" SCSI, 230 MB. ..............:::csssseeeeeeeeseeseeeeeeeeeeeseneees 661-1641
HDA, internal 3.5" SCSI, 400 MB ou... cece ceecsceeeseeeeeseeeeeeeeeeenes 661-1636
CablesHDA LED (amber) 203.0. ic ie ee ee: 590-0506
Cable, HDA LED (fits 1-inch-height drives) .............cccccccsessseesees 590-0527
Cable, HDA LED (400 MB HDA)...........:::cccccccccceeeeeesessessesssessenees 590-0248
Cable, internal HDA power (2 X 2 Pil) ........ccceeeeseeeeeeeeeeeeeeeeeeaeeees 590-0512
Cable, internali HDA; SCSI i wassacvissexsaatissanabainnansatax qraeannansnasattewnes 590-0609
Screw, 6-32 x .25 (HDA to HDA bracket).............cccessseseeeeeeneeees 444-6104
Service pkg., HDA, 3.5", half-height & 1-inch-height, w/carrier ..602-0282
Lithium battery (W/O l@QS)..............ccccececesssseesseeeeceeeeeeesaeaeeeseeeeeeeeeens 742-0111
Baltery NOIGSh COVEN, vaste weutacectsoaresundcacsvoainaeshepecabeetsiassacnenweaviaen: 520-0344
WO QIGHOO GIG i sasscccisaccak she cauatstaeaesianbautics tautaccasnedeats eansaveniarsie oadeesui Saal 661-0666
DRAM SIMM, 1 MB, SOg, 80 NS................. ccc ecceeeeeeeeeeeeeeeeeeeeeees 661-0520
DRAM SIMM, 1 MB, SOd, 80 NS................. ccc ceeceeeeneeeeeeeeeeeeeeeeeees 661-0719
VRAM SIMM, 256K, 100 1S 2.0.0... cccccccccecccccceeeeeeeeesesesseensaeeneeanas 661-0609
VRAM SIMM, 256K, 80 1S... cccccccccececcecececeeseeceseseeseeesananeenes 661-0722
Microphone ASSEMDIy ...........cccccccccsssseseceeceeesseueeesseceeeeseeeeseeaeesseeeeess 699-5071
Power Supply With f€N...........ececccceceeecceeeeeeeeeeeeeeeeesseeeesaeassssssesseeesees 661-0467
Bracket, power SUPDIY fAN............ccccccccseseeseseeeeeeeeseeeeeeeeeeeeeeeesenees 815-5071
POWED SUDDIV TART whasecciio ts ants Ana tvancreiyscedsteamate euleriaeen sed eaten. 982-0023
Reset/interrupt SWITCH ..........ccccccccssssssseceeeecccecseeessseeeeeeecssseneasseeeeneess 815-6270
SDCAKEL 6 ONIMS cs.caeredcieriaancorsatetledawaaaitesivasacerteuselventina gious” 630-5999
SPEAKS! DFACK EL isis rinse exe cuesrreaieesndinedereuaalesmaniatoanaaavaennenses 815-6031

Macintosh Computers, Vol 2 113

Specifications

Processor Motorola 68040 microprocessor; 25 MHz; built-in paged memory
management unit (PMMU), floating-point unit (FPU), and 8K
memory cache

Addressing: 32-bit registers; 32-bit address/data bus

DRAM: 4 MB, expandable to 20 MB; 80 ns or faster SIMMs

ROM: 1 MB soldered on logic board; ROM SIMM socket available
PRAM: 256 bytes

VRAM: 512K, expandable to 2 MB; 100 ns or faster VRAM SIMMS
Clock/calendar: CMOS custom chip with long-life lithium battery

Disk Storage Floppy drive: 1.4 MB floppy drive
Hard drive: Internal 3.5" hard drive (many capacities)

VO Interfaces | ADB: Two ADB ports for keyboard, mouse, and low-speed input

devices; mini DIN-4 connectors

Serial: Two RS-422 (RS-232-compatible) serial ports; 230.4 Kbaud
max.; mini DIN-8 connectors

SCSI: One SCSI port; DB-25 connector

NuBus: Two NuBus slots; 96-pin Euro-DIN connectors

Video: One DA-15 video port for built-in video

Ethernet: Built-in Ethernet port; AAUI-15 connector

Expansion: One 68040 processor-direct slot (PDS); 140-pin connector

Sound: One stereo sound input port; one stereo sound output port

I/O Devices Keyboard: Apple Keyboard, Apple Extended Keyboard, Apple
Keyboard II, or Apple Extended Keyboard II
Mouse: ADB mouse; mini DIN-4 connector

Sound and Sound generator: Enhanced Apple sound chip (EASC), including

Video four-voice, wavetable synthesis and stereo sampling generator
capable of driving stereo mini phone jack headphones or other
stereo equipment

Video: Built-in VRAM supports all Apple monitors; six VRAM
expansion slots (three banks); NuBus expansion slots support
multiple external color and monochrome monitors

Electrical Line voltage: 100-240 VAC
Frequency: 50-60 Hz, single phase
Maximum power: 130 W (not including monitor power); 90 W
continuous

Physical Height: 5.5 in. (14 cm)

Width: 11.9 in. (81.2 cm)
Depth: 14.4 in. (36.5 cm)
Weight: 13 lb., 10 oz. (6.2 kg)

Environmental | Operating temperature: 50—104° F (10—40° C)
Storage temperature: -40 to 116.6° F (-40 to 47° C)
Relative humidity: 20-80% non-condensing
Altitude: 0Q—10,000 ft. (O-3048 m)

114 Macintosh Quadra 700

Symptom/Cure Chart

System Problems

Four-tone startup
error chord sounds
(hardware failure)

Eight-tone startup
error chord sounds
(DRAM SIMM failure)

Doesn't power on—
screen is black,

fan is not running,
and LED is not lit

Clicking, chirping, or
thumping sound

System shuts down
intermittently

System intermittently
crashes or locks up

Video Problems

Screen is completely
dark, fan is not
running, and LED is
not lit

Partial or whole
screen is bright and
audio is present,

but no video
information is visible

Macintosh Computers, Vol 2

Solutions

Disconnect SCSI hard drive power and data cables and restart
computer.

2. Disconnect floppy drive cable and restart computer.

3. Replace logic board.

1. Replace DRAM SIMMs.

2. Replace logic board.

3. Perform DRAM SIMM verification with new logic board.

1. Check cables.

2. Plug monitor directly into wall socket and verify that monitor
has power.

3. Replace power cord.

4. Replace power supply.

5. Replace logic board. Move customer's SIMMs to new logic board.

1. Replace power supply.

2. Replace logic board. Move customer's SIMMs to new logic board.

1. Be sure to keep case air vents on sides and top. Thermal
protection circuitry may shut computer down. After 30 to 40
minutes, computer should be OK.

2. Replace power cord.

3. Check battery. Replace battery if voltage is below 3.2.

4. Replace power supply.

5. Replace logic board. Move customer’s SIMMs to new logic board.

1. Make sure you are using correct version of system software.

2. Make sure you are using known-good software.

3. Identify and replace defective DRAM SIMMs.

4. Replace logic board. Move customers SIMMs to new logic board.

5. Replace power supply.

Solutions

1. Plug monitor directly into wall socket, and verify that monitor
has power.

2. Check battery; replace if voltage is less than 3.2.

3. Replace power supply.

4. Replace logic board. Move customer's SIMMs to new logic board.

1. Replace video cable.

2. Ifa video card is installed, move card to a different slot.

3. Replace video interface card, if installed.

4. Replace VRAM SIMMs.

5. Replace monitor. If replacing monitor corrects the problem,
refer to Service Source for troubleshooting information.

6. Replace logic board. Move customer's SIMMs to new logic board.

115

Screen is black,
audio and drive
operate, fan is
running, and LED
is lit

Screen is black,
audio and drive
don't operate,
but fan is running
and LED is lit

Floppy Drive
Problems

Internal floppy drive
runs continuously

Audio and video
are present, but
internal floppy
drive doesn't
operate

Disk ejects; display
shows icon with
blinking “X”

Drive won't eject
disk

Drive attempts to
eject disk but can't

MS-DOS drive can't
recognize disk
formatted on 1.4 MB
SuperDrive

116

PO ON ee eS

Adjust brightness on monitor.

Replace video cable.

If video interface card is installed, move card to different slot.
Replace video interface card, if installed.

Replace VRAM SIMMs.

Replace defective DRAM SIMMs.

Replace monitor. If replacing monitor corrects the problem,
refer to Service Source for troubleshooting information.
Replace logic board. Move customer’s SIMMs to new logic board.
Replace power supply.

Replace video cable.

If video interface card is installed, move card to different slot.
Replace video interface card, if installed.

Replace VRAM SIMMs.

Replace defective DRAM SIMMs.

Replace logic board. Move customer's SIMMs to new logic board.
Replace power supply.

Replace monitor. If replacing monitor corrects the problem,
refer to Service Source for troubleshooting information.

Solutions

Replace bad disk with known-good system disk.

Replace floppy drive cable.

Replace floppy drive.

Replace logic board. Move customer’s SIMMs to new logic board.

Replace bad disk with known-good system disk.

Verify that all external SCSI devices are disconnected.
Replace floppy drive cable.

Replace floppy drive.

Replace logic board. Move customer’s SIMMs to new logic board.
Replace power supply.

Replace bad disk with known-good system disk.

Replace floppy drive cable.

Replace floppy drive.

Replace logic board. Move customer's SIMMs to new logic board.

Switch power off and hold mouse button down while switching
power back on.
Replace internal floppy drive.

Reinsert disk and try to eject disk again.
Reseat drive bezel so slot in bezel aligns correctly with drive.

To ensure read/write compatibility with 1.4 MB SuperDrive,
format all disks with MS-DOS drive first.

Macintosh Quadra 700

Hard Drive
Problems

Internal hard drive
doesn't operate;
drive doesn’t spin

Drive doesn't
appear on
desktop

Computer works with

internal or external
SCSI devices, but
not both

Peripheral
Problems

Cursor moves, but
clicking mouse
button has no effect

Cursor doesn't
move

No response to any
key on keyboard

Cannot double-click
to open application,
disk, or server

Known-good
serial printer
doesn't print

Macintosh Computers, Vol 2

Solutions

a ole a

Replace internal hard drive cable.

Replace SCSI power cable.

Replace hard drive.

Replace logic board. Move customers SIMMs to new logic board.

Make sure each SCSI device has a unique address.
Drive may not be initialized. If drive has just been installed,
initialize drive with HD SC Setup and install system software.

Make sure SCSI device switch setting on external device(s) is
not set to 7 (the computer address) or the same number as
an internal SCSI device.

Replace external SCSI terminator.

Verify SCSI termination on internal SCSI drive.

Refer to Service Source to troubleshoot external device.

Solutions

i eee

Po =

Replace mouse.
Replace logic board. Move customer’s SIMMs to new logic board.

Check mouse connection.

Clean mouse.

If mouse was connected to keyboard, connect mouse to rear
ADB port. If mouse works, replace keyboard. If mouse does
not work in any ADB port, replace mouse.

Replace logic board. Move customers SIMMs to new logic board.

Check keyboard connection to ADB port.

Replace keyboard cable.

Replace keyboard.

Replace logic board. Move customer's SIMMs to new logic board.

Remove duplicate system files from hard drive.

Clear parameter RAM. Hold down <Command> <Option>
<R> keys while booting system. Release keys when
computer generates startup chord for second time. Reset
mouse controls.

If mouse was connected to keyboard, connect mouse to rear
ADB port. If mouse works, replace keyboard. If mouse

does not work in any ADB port, replace mouse.

Replace logic board. Move customer's SIMMs to new logic board.

Make sure system software is version 7.0.1 or later.

Make sure Chooser and control panel settings are correct.
Replace printer interface cable.

Replace logic board. Move customer's SIMMs to new logic board.

117

Known-good 1. Make sure system software is version 7.0.1 or later.
LaserWriter on an 2. Make sure Chooser and control panel settings are correct.
AppleTalk network 3. Refer to Networks manual in Service Source.

doesn't print

Miscellaneous

Problems Solutions
No sound from 1. Verify that volume setting in control panel is one or above.
speaker 2. Replace speaker.

3. Replace logic board. Move customer’s SIMMs to new logic board.

DFAC VIA2 SCC Sonic JDB SCSI Controller

Enhanced

Apple VL ITITA Sa (pes= On/Ott Switch
Sound Chip 7 CI aa
| : DAFB
VIA1
Relayer VRAM
68040
MCU
YANCC
Peron? VRAM SIMM
Connectors
eee (3 Banks of 2)

1 MB ROM Eton

DRAM SIMM
Connectors
(1 Bank of 4)

|
oO
ol
a
231)
PJ
oO
Clo

(Soldered) ——_

J
La a
Reset Switch

Interrupt Switch 4MB DRAM (Soldered) Battery

Figure 2 Macintosh Quadra 700 Logic Board

118 Macintosh Quadra 700

Memory Upgrades

DRAM Upgrade

The Macintosh Quadra 700 has 4 MB of DRAM soldered on the logic board
(bank A) and accepts four same-size DRAM SIMMs (80 ns or faster) in bank B.
Configurations greater than 8 MB require third-party DRAM SIMMs.

Total Bank A Bank B
DRAM (Soldered) (SIMMs)
4 MB 4 MB Empty

8 MB 4 MB Four 1 MB SIMMs
20 MB 4 MB Four 4 MB SIMMs

VRAM Upgrade

The Macintosh Quadra 700 has 512K of VRAM soldered on the logic board
(bank A). VRAM is expandable to 1 MB or 2 MB by way of VRAM SIMM sockets
(banks B, C, and D), each of which holds two 256K VRAM SIMMs.

Total Bank A Bank B Bank C Bank D
VRAM (Soldered) (SIMMs) (SIMMs) (SIMMs)
512K 512K Empty Empty

Two 256K
SIMMs

Two 256K Two 256K Two 256K
SIMMs SIMMs SIMMs

1 MB 512K

Empty Empty

2 MB 512K

Macintosh Computers, Vol 2 119

“

Macintosh aire
900/950

3 Oe ne
eeeeeeeeeeeeeenee
2 ~ «

‘

Illustrated Parts List. 122
Specifications —" 124
Symptom/Cure Chart ~~ 126.
DRAM Upgrade’... 130
VRAM Upgrade 131
Installing a SCSI Storage ~

- Device - 132.
Logic Board Diagram . 184

*s
<i

‘

} i

*®

Illustrated Parts List

)

scsi Select

Floppy Floppy
Drive Drive Cable
Assembly

SCSI Device
_ Select Cable

_ Drive Shelf
Assembly

Microphone

\e
OOS = Ve =
\ \=:
eee recennenme sas Pace renee
y)
,
*

~ Main Housing —
Assembly

ADB Cable

Speaker
Assembly

~. AC Power

Interrupt

_ Actuator
Reset ~_

Actuator

Figure 1. Macintosh Quadra 900/950 Exploded View

Macintosh Quadra 900/950

POISE: |OGO xz avsihancawiiseonsnautawsaswncacasenne eaveaesedaNiniseaesaasacteuntecaaentaanan 825-1256

Bezel assembly (bIank)...............cccccccccceceeeceeeeesseeeeeceeseeesaeeaesereeeeeees 076-0431
Cable, ADB, 2 meter... eee ece eee ceceeseeeceececeeseeusueeeseusneseseeeueavenes 590-0152
Cable; AC power, 110 V) sviccnaeccisrescestassnceinendentenss setvacxesceve deacons 590-0760
Pan, DOWEr SUDDIY islescoid oa tose aceducsrtanese anata cnensstanan arena ns cemgnaevemn nes cons 720-0518
Exhaust vent cover (included with main housing).................:::05 076-0432
Floppy drive, 1.4 MB Apple SuperDrive................::::::::eseeeeeeeeeeeeeeees 661-0474
Bezel assembly (floppy rive) .............::ccccceeeeeeeeeeeeeeeeeeeeeeeeeeeneenes 076-0437
Cable) INCU ws -ccedfeseweldenssacaee-satacetancacaneraueacnisd.amwaetee-eeeccuaseisee 590-0515
Drive carrier (also used as shipping fixture)................:::ececee 805-5050
PACKING CSIs cccncaats cavities eetesetcn erase vecemeendat oeceisnisenaeeuevareddaesateets: 003-0003
Service packaging (floppy rive)...............cccecceseeeeeeeeeeeeeeeeeesaneeees 602-0210
Spacer, (included in Screw Kit) ...............cccccccceeeeessseeeeeeceeesenseeenees 810-5113
HDA, 160 MB, 3.5” SCSI (without Carrier) .............cccceeceeeeeeneeeeeeeenees 661-1641
HDA, 400 MB, 3.5” SCSI (without Carrier) ............ cc ceeeeeeeeeeseeseeeeeeees 661-1636
Cable, SCSI (with terminator) .................ccccccecssseseeeeeeaeseeeeeeeaeeeees 590-0528
Cable. SCSINPOWER iow cadet cea eae ee eine ite dees 590-0517
Cable, SCSI device select (use with 661-1641).............. eee 590-0518
Cable, SCSI device select (use with 661-1636)...................08 590-0790
Drive shelf assembly (with Velcro cable straps) ..............:.e 630-6097
Hard drive carrier, internal 3.5” OF 5.257 oc cccceeseeceseeseeseseeees 805-5106
Screw, 6 - 32 x .25 (hard drive carrier to hard drive) .................. 444-6104
Screw, 3.5 x .6 x .8 mm (drive shelf assy to power supply)........ 462-4100
Service packaging, HDA, 3.5”, half-height and 1-inch-height .....602-0282
Switch, SCSI device SeleCt .......... cee cecceeceeeccecceeececceeccececeecesenerans 705-0045
HALE ACURA ON tect cla on asirret iiosle ae odctstear annem aud ago aaieaeayeacnen ees 815-6250
Keyswitch (With tWO K@YS)...........:ccccecsssseeceeceseseeeeseaeessereetenaaseeeeesaaes 705-0175
Light pipe, power LED (included with main housing)..................:00+ 815-6251
Logic board (without DRAM/VRAM SIMMs)................:::::sssseeeeeereees 661-0665
Logic board, 2 MB (Macintosh Quadra 950)..............ceeeeeeeeeeeeeeeees 661-0665
Battery NOGr COVEN sivsiesiiwerssdacoutvalavrdn iiss tierstebnatiuavedineiawss 520-0344
DRAM SIMM, 1 MB, 80 NS..............ccccccccseeseeeeeeeeeeeeeeeeeeeseeeeeeeeenes 661-0520
DRAM SIMM, 1 MB, 80 DS..............cccccccseeeeeeeeeceeeeeeeeeeeeeeeseeeeeeees 661-0719
Jumper connector (pkg Of 10)... ccececseseeeeeeeeeseeeeeeeeeeeeeeeees 517-0546
Lithium battery (without leads) ...............ccceecccessssceeseeeeeeceeseeseeeees 742-001 1
VRAM SIMM, 256K 100 1S.............:::cccccececeeseeeessseeeeeeeeeeeaeeaeeneeees 661-0609
VRAM SIMM, 256K 80 IS...............::ccccceeeceeseeeeessseeeeeeeeseeaeaaeeeeeees 661-0722
Main NOUSING ASSEMDIy ............ccccseeccccceescecceeseeeceeeeesseeeessaeeeessaeerees 076-0434
Microphone assembly (Macintosh Quadra 900) .................cccceeeeeees 699-5073
Miscellaneous SCrew Kit .............ececeecceeseeeeeceeeseeteeneeceseneecnnaeusereessaens 076-0435
Power supply (iNCludeS fan)..............ccccsesesecseeseceesesseceeeeeeeeseneeeeseaees 661-0664
Screw, 3.5 x .6 x .8 mm (power Supply to Case) ............... eee 462-4100
FRESCT-ACIUALON nwsscatvica a tverannaasenacinna ns betundse Malad rhe ylauhedieapuiaabearetaainaan 815-6249
SIDE COVEL |AICH s siewioucwuninsirereatcrncarienanstsauwenanwn eters nuattuaansedinaweamanneetas 815-6262
SIDE COVELASSEMDI Vercasic diiscaradais (Yerivedstawioidaws nen deaaedee vanes deosbaeduends. 076-0436
Speaker ASSEMBLY .............cccesscsssccccscessececesscessececesocsseceeessonsseesessseaes 630-601 1
SPEAKEr DEZO lariat. tn aid eee oaeaenteuele ulealades fag ang uecaceonmuntinannmnioons 076-0433

Macintosh Computers, Vol 2 123

Specifications

Processor

Motorola 68040 microprocessor; 25 MHz (Macintosh Quadra 900),
33 MHz (Macintosh Quadra 950); built-in paged memory
management unit (PMMU), floating-point unit (FPU), and 8K
memory cache

Addressing: 32-bit registers; 32-bit address; 32-bit data bus

| Memory

DRAM (Macintosh Quadra 900): 4 MB, expandable to 64 MB; 80 ns or
faster SIMMs

DRAM (Macintosh Quadra 950): 8 MB, expandable to 64 MB; 80 ns or
faster SIMMs

ROM: 1 MB, using two 150 ns, 256K by 16-bit chips

PRAM: 256 bytes

VRAM: 1 MB, expandable to 2 MB; 100 ns or faster VRAM SIMMS

Clock/calendar: ASIC clock chip with PRAM and DFAC support and
seven-year lithium battery

Disk Storage

Floppy drive: 1.4 MB floppy drive

Hard drive (Macintosh Quadra 900): Optional, 160 or 400 MB hard
drive

Hard drive (Macintosh Quadra 950): Optional, 230 or 400 MB hard
drive

0 Interfaces

ADB: One ADB port; low-speed, synchronous serial interface

Serial: Two RS-422/RS-232 ports; 230.4 Kbaud max.; mini DIN-8
connectors; 0.92 mbit/sec. if external clock source is provided
(modem interface only); asynchronous, synchronous (modem
only), and AppleTalk (printer only) protocols supported

SCSI: One SCSI port; DB-25 connector; supports max. of eight
devices (including computer, which is always device 7)

NuBus: Five slots support standard oversize cards, burst-mode
transfers, a processor write buffer, and NuBus '90; 96-pin
Euro-DIN connectors

Video: Supports Apple monitors (8-bit), VGA monitors, and NTSC
and PAL video standards

Ethernet: Built-in Ethernet port; AAUI-15 connector

Expansion: One 68040 processor-direct slot (PDS); 140-pin connector

Sound: 8-bit stereo output; 8-bit monaural input; supports electret-
type microphone

WO Devices _

124

Keyboard: Supports all Apple ADB keyboards; mini DIN-4 connector
Mouse: ADB mouse; mini DIN-4 connector

Macintosh Quadra 900/950

Sound and Sound generator: Four-voice, wavetable synthesis and stereo
Video sampling generator
Video: Built-in, 8-bit video circuitry (upgradeable to 24-bit); supports
Apple 8-bit monitors and many non-Apple monitor types (NTSC,
PAL, VGA)
Microphone: Electret, omnidirectional; output voltage is 4 mV, peak-
to-peak, at normal value

Line voltage: 100-240 VAC (RMS), self-configuring power supply
Frequency: 50-60 Hz, single phase

Maximum power: 303 W (not including monitor power)

Physical Height: 18.6 in. (47.3 cm)
Width: 8.9 in. (22.4 cm)
Depth: 20.6 in. (523 cm)
Weight: 36 lb., 12 oz. (16.7 kg) without hard drive

Environmental | Operating temperature: 50—104° F (10—40° C)
Storage temperature: -40 to 116.6° F (-40 to 47° C)
Relative humidity: 20-80% non-condensing
Altitude: 0O—10,000 ft. (O-3048 m)

Macintosh Computers, Vol 2 125

Symptom/Cure Chart

System Problems Solutions

Four-tone error chord 1. If system boots from internal hard drive, disconnect SCSI

plays at startup cable from logic board and restart system. If startup
sequence is normal, reinitialize hard drive. If error chord still
sounds, replace hard drive.

2. If system boots from internal floppy drive, disconnect floppy
drive cable and restart system. If startup sequence is normal,
replace floppy drive.

3. If error chord still sounds at startup, replace logic board.
Move customer’s SIMMs to new logic board.

Eight-tone error chord Install four known-good SIMMs in bank A and switch on

plays at startup system. If no error chord sounds, test customer's SIMMs.
(Switch system off, replace one known-good SIMM with
customer SIMM. Switch system on. If no error chord sounds,
customer SIMM is good. Repeat test for each SIMM.)

System doesn't 1. Check power cables.
power on—screen 2. Plug monitor directly into wall socket and verify that monitor
black, fan not running, has power.

and LED not lit 3. Replace power cord.
4. Replace power supply.
5

Replace logic board. Move customers SIMMs to new logic board.

Clicking, chirping, or
thumping sound

1. Replace power supply.

2. Replace logic board. Move customers SIMMs to new logic board.
3. Replace floppy drive cable.
4

Replace floppy drive.
System shuts down 1. Make sure air vents at rear of system and on side cover are
intermittently clear. Thermal protection circuitry may shut system down.

System should start after 30 to 40 minutes.

2. Replace power cord.

3. Check voltage of lithium battery on logic board. If battery
voltage is below 3.2 volts, replace battery.

4. Replace power supply.

5. Replace logic board. Move customer's SIMMs to new logic board.

System crashes or 1. Make sure system software is 7.0.1 or later.
hangs intermittently 2. Verify that software (applications, INITs, CDEVs, RDEVs, etc.)
is compatible with System 7.
3. Identify and replace defective DRAM SIMMs.
4. Replace logic board. Move customers SIMMs to new logic board.
5. Replace power supply.

System doesn't 1. Attach monitor to system. (Unless system is configured as a

power on when server, it will not power on without monitor attached.)

monitor not attached 2. If system is a server, install Virtual Monitor Switch Control
panel to power-on system.

126 Macintosh Quadra 900/950

Video Problems

Partial or whole
screen bright and
audio present, but

no video information

visible

Screen is black,
audio and drive
operate, fan runs,
and LED is lit

Screen is black,
audio and drive
don't operate, fan
runs, and LED is lit

Floppy Drive
Problems

Drive doesn't
operate

Drive runs
continuously

During system startup,

disk ejects; display
shows icon with
blinking “X”

Solutions

Replace monitor. If replacing monitor corrects video problem,
refer to appropriate Service Source manual for monitor
troubleshooting information.

2. Replace video cable.

3. Move video interface card (if installed) to a different slot.

4. Replace video interface card (if installed).

5. Replace logic board. Move customers SIMMs to new logic board.

1. Adjust brightness on monitor.

2. Replace monitor. If replacing monitor corrects video problem,
refer to appropriate Service Source manual for monitor
troubleshooting information.

3. Replace video cable.

4. If video interface card is being used with monitor, move card
to a different slot.

5. If video interface card is being used with monitor, replace
card.

6. Identify and replace defective DRAM SIMMs.

7. Replace logic board. Move customer's SIMMs to new logic board.

8. Replace power supply.

1. Replace video cable.

2. Move video interface card (if installed) to a different slot.

3. Replace video interface card (if installed).

4. Identify and replace defective DRAM SIMMs.

5. Replace logic board. Move customers SIMMs to new logic board.

6. Replace power supply.

Solutions

1. Verify that Keyswitch is not on secure.

2. Replace floppy disk.

3. Replace floppy drive cable.

4. Replace floppy drive.

5. Replace logic board. Move customer's SIMMs to new logic board.

6. Replace power supply.

1. Replace floppy disk.

2. Replace floppy drive cable.

3. Replace floppy drive.

4. Replace logic board. Move customer's SIMMs to new logic board.

1. Replace disk with known-good system disk.

2. Replace floppy drive cable.

3. Replace floppy drive.

4. Replace logic board. Move customers SIMMs to new logic board.

Macintosh Computers, Vol 2 127

Drive won't
eject disk

Drive attempts to
eject disk, but disk
doesn't eject

MS-DOS drive doesn't —

recognize disk

formatted on SuperDrive

Hard Drive Problems

Single internal SCSI
drive doesn't operate;
drive doesn't spin

Drive doesn't
appear on desktop

No internal SCSI
drives operate

System works with
internal or external
SCSI devices, but
not with both

Peripheral
Problems

Cursor doesn't
move

Cursor moves, but
clicking mouse button
has no effect

128

Verify that keyswitch is not on secure.

Switch power off and hold mouse button down while switching
power back on.

Replace floppy drive.

Replace floppy drive cable.

Replace logic board. Move customers SIMMs to new logic board.

Reseat floppy drive bezel and/or floppy drive so that slot in
bezel aligns correctly with floppy drive.

Eject disk manually with paper clip.

Replace floppy drive.

Format all disks with the MS-DOS drive first.

Solutions

ale

Replace SCSI cable.

2. Replace SCSI power cable.

3. Replace SCSI drive.

1. Make sure each SCSI device has unique address.

2. Use HD SC Setup to initialize drive.

1. Make sure each SCSI device has unique address.

2. Verify SCSI device termination.

3. Replace SCSI cable.

4. Replace power supply.

5. Replace logic board. Move customer's SIMMs to new logic board.

1. Make sure each SCSI device has unique address.

2. Replace external SCSI terminator.

3. Make sure internal SCSI drives are not terminated.

4. Troubleshoot external device using appropriate Service
Source manual.

Solutions

1. Make sure keyswitch is not on secure.

2. Check mouse connection.

3. Inspect inside of mouse for buildup of dirt or other
contaminants. Clean mouse.

4. If mouse was connected to keyboard, connect mouse to rear
ADB port. If mouse now works, replace keyboard. If mouse
doesn’t work in any ADB port, replace mouse.

5. Replace logic board. Move customer's SIMMs to new logic board.

1. Replace mouse.

2. Replace logic board. Move customer's SIMMs to new logic board.

Macintosh Quadra 900/950

No response to any
key on keyboard

Cannot double-click
to open a disk,
application, or
server

Known-good
serial printer
doesn't print

Known-good printer
on AppleTalk network
doesn't print

Miscellaneous
Problems

No sound from
speaker

Macintosh Computers, Vol 2

Seo eS

ae ae

Make sure keyswitch is not on secure.

Verify keyboard connection to ADB port.

Replace keyboard cable.

Replace keyboard.

Replace logic board. Move customer's SIMMs to new logic board.

Remove extra system files on hard drive.

Clear parameter RAM. Hold down <Option> <Command>
 and <R> keys during startup but before "Welcome to
Macintosh" message appears.

If mouse was connected to a keyboard, connect mouse to a
rear ADB port. If mouse works, replace keyboard. If mouse
does not work in any ADB port, replace mouse.

Replace logic board. Move customer's SIMMs to new logic board.

Make sure system software is version 7.01 or later.

Make sure Chooser settings are correct.

Replace printer interface cable.

Replace logic board. Move customer's SIMMs to new logic board.

Make sure system software is version 7.01 or later.
Make sure Chooser settings are correct.
Refer to Networks tab in Service Source.

Solutions

2.
3.

Make sure speaker volume setting in the Sound control panel
is one or above.

Replace speaker.

Replace logic board. Move customer's SIMMs to new logic board.

129

DRAM Upgrade

130

The Macintosh Quadra 900 ships with four 1 MB DRAM SIMMS on the logic
board; the Macintosh Quadra 950 ships with eight 1 MB DRAM SIMMs. You
can increase the amount of memory (up to 64 MB) by installing additional
SIMMs in an empty SIMM bank or by replacing the original 1 MB SIMMs with
larger 4 MB SIMMs.

The Macintosh Quadra 900 and 950 have four banks of DRAM SIMM sockets
(banks A, B, C, and D, shown in Figure 2). Each bank contains four slots.
When installing DRAM SIMMs in the Macintosh Quadra 900 or 950, the
following rules apply:

¢ — Use DRAM SIMMs that are 80 ns or faster (SIMMs with slower ratings will
cause serious timing problems and system crashes).

¢ — Fill each bank with DRAM SIMMs or leave each bank empty.

e A filled bank must have four DRAM SIMMs of the same size (four 1 MB
SIMMs or four 4 MB SIMMs).

To install a SIMM, hold it by its edges with the contacts pointing down. Insert
the SIMM at an angle (bottom forward) into the SIMM slot. Push back on the

top corners of the SIMM. You will hear a click when the SIMM snaps into
place.

AP ae
H

Tim

O
L
[=]

eee :Bank A=

Ill) OO

DRAM SIMM Slots

Figure 2 DRAM SIMM Slots on the Logic Board

Macintosh Quadra 900/950

VRAM Upgrade

The Macintosh Quadra 900 and 950 ship with 1 MB of VRAM soldered on the
logic board. You can increase the amount of VRAM to 2 MB by installing
additional VRAM SIMMs, as the following procedure explains.

The Macintosh Quadra 900 and 950 have two VRAM SIMM sockets (J3 and J4,
shown in Figure 3). Each socket can hold up to two 256K VRAM SIMMs. When
installing VRAM SIMMs, the following rules apply: |

e Use VRAM SIMMs that are 100 ns or faster (SIMMs with slower ratings will
cause video timing problems). —

e Fill both VRAM SIMM sockets or leave both sockets empty.
e Filled SIMM sockets must contain four 256K VRAM SIMMs.

To install a SIMM, hold it by its edges with the contacts pointing down. Insert
the SIMM at an angle (bottom forward) into the SIMM slot. Push back on the
top corners of the SIMM. You will hear a click when the SIMM snaps into

place.

VRAM SIMM Slots

Figure 3 VRAM SIMM Slots on the Logic Board

Macintosh Computers, Vol 2 131

Installing a SCSI Storage Device

The Macintosh Quadra 900 and 950 support a variety of Apple and third-party
internal SCSI devices including 3.5" and 5.25" hard drives, CD-ROM drives,
removable cartridge drives, digital audio tape (DAT) drives, and drive arrays.
These computers support a maximum of four devices, including the built-in
Apple SuperDrive.

When installing a SCSI storage device, remember the following:

e Remove termination resistors before installing a device. The Macintosh
Quadra 900 and 950 have built-in termination. Failure to remove the
termination resistors from installed devices can result in damage to the
logic board.

¢ The power supply provides a maximum of 303 watts.

¢ Unplug the computer before beginning any take-apart or upgrade
procedure. The power supply provides continuous power to the system
to support back-up power to NuBus cards. You can damage the logic
board and NuBus cards by not removing power prior to beginning.

To install an internal SCSI device in the Macintosh Quadra 900 and 950:
1. Remove the side cover.

2. Disconnect the floppy drive and hard drive data cables from the logic
board and the hard drive power cable from the power supply (Figure 4).

Hard Drive
Power Cable

Ve,

Floppy Drive : 3 Jy
= “a

Hard Drive

Data Cable

Figure 4 Disconnecting the Drive Cables

132 Macintosh Quadra 900/950

Note

3. Remove the two drive shelf screws, slide the drive shelf toward the rear of
the computer, and carefully lift the shelf out of the case.

4, Install the SCSI device in the drive carrier as shown in Figure 5. Be sure
to connect the SCSI select switch. Also, verify that the device is not
terminated.

Fixed-media devices (Winchester hard drives or drive arrays) can be -
installed in any open position.

Removable-media devices (DAT, CD-ROM, or removable hard drives)
must be installed below the floppy drive. (You must remove the floppy
drive first. You will also need to replace the blank bezel with the bezel
supplied with the device. See Service Source for step-by-step
instructions.)

B wed Screws
Sr

SA!
oS
Ne
Cony
s
= =
steal hee
eo”
the SY
.o

SCSI Select

Cable
C
_~ Hard Drive
Carrier
Hard Drive
Power Cable

Hard Drive
Mounting Screw

Hard Drive
Data Cable

Figure 5 Installing a SCSI Device

5. Replace the drive shelf and reconnect all cables.
6. Replace the side cover.

Macintosh Computers, Vol 2 133

Logic Board Diagram

ROM VRAM Power Auxillary
Keyswitch SIMM SIMMs Supply SCSI

DRAM
SIMMs

a /
Floppy Speaker Processor- NuBus SCSI
Drive Direct Slot

Figure 6 Macintosh Quadra 900/950 Logic Board Connectors

134 Macintosh Quadra 900/950

Apple Computer, Inc.
20525 Mariani Avenue
Cupertino, CA 95014 Printed in the U.S.A.
TLX 171-576 072-0277-B

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Full text of "1993 March Service Guide Macintosh Computers Vol 2"

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